TY  - CONF
AU  - Mančić, Ana
AU  - Nedić, Milica
AU  - Leykam, D.
AU  - Maluckov, Aleksandra
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11802
AB  - Photonic lattices represent a fruitful testbed for investigating various topological phases, nonlinear phenomena, and intriguing consequences of the development of modulational instability in topologically nontrivial media, as the inter-relation between topological edge states [1], edge solitons [2] and bulk solitons [3]. They provide the possibility not only to highlight the equivalent phenomena in condensed matter systems but to go beyond them into new land of exotic nonlinearly driven topologically moderated states. Recently, we have shown that the modulational instability of nonlinear Bloch modes could be used to probe the band topology in non-driven lattices [4]. As an extension, here, we report on the results of the study of the relaxation of the optical wave fields in nonlinear two-dimensional Chern insulators [5]. They undergo a transition from an ordered bulk state to a disordered state, triggered by the modulational instability [6]. The phenomenon of the memory loss of the initial state is related to nonlinear wave-mixing and ergodization within the gapped bands [7]. The testbed for our numerical study is two-dimensional π-flux square lattice in which we investigate the population of topological bands by the wave mixing of nonlinear Bloch waves. We tune the strength of the nonlinearity and lattice parameters in order to observe different dynamical regimes: toplogical transitions, stable and unstable propagation. We have found that the unstable propagation gives rise to a new quasi-steady state characterized by a convergence of certain wave field characteristics (participation ratio, Chern number, purity gap) to constant values. Next, in order to find the correspondence between this steady state and thermalized wave field we apply a grand canonical approach to calculate the effective temperature and chemical potential of the wave field. We have found that the effective temperature and chemical potential exhibit a strong k – dependence throughout the Brillouin zone. This implies the existence of a long-lived pre-thermalized regime and the absence of thermalization.
PB  - Belgrade : Vinča Institute of Nuclear Sciences
C3  - PHOTONICA2023 : 9th International School and Conference on Photonics : book of abstracts; August 28 - September 1, 2023; Belgrade
T1  - The modulation instability triggered band relaxation in photonic Chern insulator
SP  - 52
EP  - 52
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11802
ER  - 

@conference{
author = "Mančić, Ana and Nedić, Milica and Leykam, D. and Maluckov, Aleksandra",
year = "2023",
abstract = "Photonic lattices represent a fruitful testbed for investigating various topological phases, nonlinear phenomena, and intriguing consequences of the development of modulational instability in topologically nontrivial media, as the inter-relation between topological edge states [1], edge solitons [2] and bulk solitons [3]. They provide the possibility not only to highlight the equivalent phenomena in condensed matter systems but to go beyond them into new land of exotic nonlinearly driven topologically moderated states. Recently, we have shown that the modulational instability of nonlinear Bloch modes could be used to probe the band topology in non-driven lattices [4]. As an extension, here, we report on the results of the study of the relaxation of the optical wave fields in nonlinear two-dimensional Chern insulators [5]. They undergo a transition from an ordered bulk state to a disordered state, triggered by the modulational instability [6]. The phenomenon of the memory loss of the initial state is related to nonlinear wave-mixing and ergodization within the gapped bands [7]. The testbed for our numerical study is two-dimensional π-flux square lattice in which we investigate the population of topological bands by the wave mixing of nonlinear Bloch waves. We tune the strength of the nonlinearity and lattice parameters in order to observe different dynamical regimes: toplogical transitions, stable and unstable propagation. We have found that the unstable propagation gives rise to a new quasi-steady state characterized by a convergence of certain wave field characteristics (participation ratio, Chern number, purity gap) to constant values. Next, in order to find the correspondence between this steady state and thermalized wave field we apply a grand canonical approach to calculate the effective temperature and chemical potential of the wave field. We have found that the effective temperature and chemical potential exhibit a strong k – dependence throughout the Brillouin zone. This implies the existence of a long-lived pre-thermalized regime and the absence of thermalization.",
publisher = "Belgrade : Vinča Institute of Nuclear Sciences",
journal = "PHOTONICA2023 : 9th International School and Conference on Photonics : book of abstracts; August 28 - September 1, 2023; Belgrade",
title = "The modulation instability triggered band relaxation in photonic Chern insulator",
pages = "52-52",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11802"
}

Mančić, A., Nedić, M., Leykam, D.,& Maluckov, A.. (2023). The modulation instability triggered band relaxation in photonic Chern insulator. in PHOTONICA2023 : 9th International School and Conference on Photonics : book of abstracts; August 28 - September 1, 2023; Belgrade
Belgrade : Vinča Institute of Nuclear Sciences., 52-52.
https://hdl.handle.net/21.15107/rcub_vinar_11802

Mančić A, Nedić M, Leykam D, Maluckov A. The modulation instability triggered band relaxation in photonic Chern insulator. in PHOTONICA2023 : 9th International School and Conference on Photonics : book of abstracts; August 28 - September 1, 2023; Belgrade. 2023;:52-52.
https://hdl.handle.net/21.15107/rcub_vinar_11802 .

Mančić, Ana, Nedić, Milica, Leykam, D., Maluckov, Aleksandra, "The modulation instability triggered band relaxation in photonic Chern insulator" in PHOTONICA2023 : 9th International School and Conference on Photonics : book of abstracts; August 28 - September 1, 2023; Belgrade (2023):52-52,
https://hdl.handle.net/21.15107/rcub_vinar_11802 .

TY  - JOUR
AU  - Mithun, Thudiyangal
AU  - Maluckov, Aleksandra
AU  - Mančić, Ana
AU  - Khare, Avinash
AU  - Kevrekidis, Panayotis G.
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10641
AB  - In the present work we revisit the Salerno model as a prototypical system that interpolates between a well-known integrable system (the Ablowitz-Ladik lattice) and an experimentally tractable, nonintegrable one (the discrete nonlinear Schrödinger model). The question we ask is, for "generic"initial data, how close are the integrable to the nonintegrable models Our more precise formulation of this question is, How well is the constancy of formerly conserved quantities preserved in the nonintegrable case Upon examining this, we find that even slight deviations from integrability can be sensitively felt by measuring these formerly conserved quantities in the case of the Salerno model. However, given that the knowledge of these quantities requires a deep physical and mathematical analysis of the system, we seek a more "generic"diagnostic towards a manifestation of integrability breaking. We argue, based on our Salerno model computations, that the full spectrum of Lyapunov exponents could be a sensitive diagnostic to that effect.
T2  - Physical Review E
T1  - How close are integrable and nonintegrable models: A parametric case study based on the Salerno model
VL  - 107
IS  - 2
SP  - 024202
DO  - 10.1103/PhysRevE.107.024202
ER  - 

@article{
author = "Mithun, Thudiyangal and Maluckov, Aleksandra and Mančić, Ana and Khare, Avinash and Kevrekidis, Panayotis G.",
year = "2023",
abstract = "In the present work we revisit the Salerno model as a prototypical system that interpolates between a well-known integrable system (the Ablowitz-Ladik lattice) and an experimentally tractable, nonintegrable one (the discrete nonlinear Schrödinger model). The question we ask is, for "generic"initial data, how close are the integrable to the nonintegrable models Our more precise formulation of this question is, How well is the constancy of formerly conserved quantities preserved in the nonintegrable case Upon examining this, we find that even slight deviations from integrability can be sensitively felt by measuring these formerly conserved quantities in the case of the Salerno model. However, given that the knowledge of these quantities requires a deep physical and mathematical analysis of the system, we seek a more "generic"diagnostic towards a manifestation of integrability breaking. We argue, based on our Salerno model computations, that the full spectrum of Lyapunov exponents could be a sensitive diagnostic to that effect.",
journal = "Physical Review E",
title = "How close are integrable and nonintegrable models: A parametric case study based on the Salerno model",
volume = "107",
number = "2",
pages = "024202",
doi = "10.1103/PhysRevE.107.024202"
}

Mithun, T., Maluckov, A., Mančić, A., Khare, A.,& Kevrekidis, P. G.. (2023). How close are integrable and nonintegrable models: A parametric case study based on the Salerno model. in Physical Review E, 107(2), 024202.
https://doi.org/10.1103/PhysRevE.107.024202

Mithun T, Maluckov A, Mančić A, Khare A, Kevrekidis PG. How close are integrable and nonintegrable models: A parametric case study based on the Salerno model. in Physical Review E. 2023;107(2):024202.
doi:10.1103/PhysRevE.107.024202 .

Mithun, Thudiyangal, Maluckov, Aleksandra, Mančić, Ana, Khare, Avinash, Kevrekidis, Panayotis G., "How close are integrable and nonintegrable models: A parametric case study based on the Salerno model" in Physical Review E, 107, no. 2 (2023):024202,
https://doi.org/10.1103/PhysRevE.107.024202 . .

TY  - JOUR
AU  - Mančić, Ana
AU  - Leykam, Daniel
AU  - Maluckov, Aleksandra
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10869
AB  - Modulational instability in topological photonic lattices enables the selective population of energy bands and generation of steady-state wavefields with well-defined topological invariants. This provides a way to measure bulk topological invariants, which determine the number of robust edge modes appearing at the lattice edges via the bulk-edge correspondence. Here we study numerically the process of wave thermalization arising from modulational instability in topological bands. We apply a grand canonical approach to compute the effective temperature β and chemical potential μ of the steady-state wavefields. The steady-state wavefields exhibit a strong wavevector k -dependence of β and μ throughout the Brillouin zone, suggesting the existence of a long-lived pre-thermal phase and the absence of thermalization for the moderate propagation times accessible using topological photonic lattices.
T2  - Physica Scripta
T1  - Band relaxation triggered by modulational instability in topological photonic lattices
VL  - 98
IS  - 5
SP  - 055513
DO  - 10.1088/1402-4896/accabb
ER  - 

@article{
author = "Mančić, Ana and Leykam, Daniel and Maluckov, Aleksandra",
year = "2023",
abstract = "Modulational instability in topological photonic lattices enables the selective population of energy bands and generation of steady-state wavefields with well-defined topological invariants. This provides a way to measure bulk topological invariants, which determine the number of robust edge modes appearing at the lattice edges via the bulk-edge correspondence. Here we study numerically the process of wave thermalization arising from modulational instability in topological bands. We apply a grand canonical approach to compute the effective temperature β and chemical potential μ of the steady-state wavefields. The steady-state wavefields exhibit a strong wavevector k -dependence of β and μ throughout the Brillouin zone, suggesting the existence of a long-lived pre-thermal phase and the absence of thermalization for the moderate propagation times accessible using topological photonic lattices.",
journal = "Physica Scripta",
title = "Band relaxation triggered by modulational instability in topological photonic lattices",
volume = "98",
number = "5",
pages = "055513",
doi = "10.1088/1402-4896/accabb"
}

Mančić, A., Leykam, D.,& Maluckov, A.. (2023). Band relaxation triggered by modulational instability in topological photonic lattices. in Physica Scripta, 98(5), 055513.
https://doi.org/10.1088/1402-4896/accabb

Mančić A, Leykam D, Maluckov A. Band relaxation triggered by modulational instability in topological photonic lattices. in Physica Scripta. 2023;98(5):055513.
doi:10.1088/1402-4896/accabb .

Mančić, Ana, Leykam, Daniel, Maluckov, Aleksandra, "Band relaxation triggered by modulational instability in topological photonic lattices" in Physica Scripta, 98, no. 5 (2023):055513,
https://doi.org/10.1088/1402-4896/accabb . .

TY  - CONF
AU  - Stojanović, Mirjana G.
AU  - Maluckov, Aleksandra
AU  - Stepić, Milutin
AU  - Mančić, Ana
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11852
AB  - Flat-band (FB) photonic lattices have been in the focus of researchers since they represent an excellent
platform for studying various fundamental physical phenomena difficult to achieve in the condensed
matter systems. Working with photonic lattices is very comfortable because they are easy to manipulate with
and it is possible to directly observe the wave dynamics. An important property of FBs lattice is that they can
host a complete set of compact localized modes (CLMs), highly robust to environmental noise. Due to lattice
their geometry, it is possible to design artificial gauge field effects which are equivalent to the magnetic field
flux, i. e. the spin-orbit interaction in atomic systems.
We have studied a two-dimensional (2D) linear and nonlinearphotonic lattices dressed by the artificial flux and
have explored the influence of the artificial gauge field on the energy band spectrum. We investigated CLM
in three types of 2D photonic lattices: octagonal-diamond, dice and plus-like lattice. Each of these lattices is
characterized by the presence of diamond plaquettes in the structure. When diamond plaquettes are dressed by
artificial flux, the Aharonov-Bohm effect has caused the appearance of new FBs for certain values of the flux.
The dynamics of the CLMs in the mentioned flux-dressed lattices have been analyzed numerically, using
the Runge-Kutta procedure of the 6th order. To describe the dynamic properties of CLMs, in the presence
of nonlinearity and artificial flux, we calculated some of the following quantities: the participation number,
which is a measure of the mode localization; the mode overlapping, which represents normalized magnitude
of the field overlap; and total intensity distribution. The evolution of these quantities show the efficiency of the
mode compactness andlocalization.
C3  - WCLOP2023 : 5th World Congress on Lasers, Optics and Photonics : Book of abstracts
T1  - Playing with the artificial flux in diamond plaquettes in different photonic lattices
SP  - 65
EP  - 65
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11852
ER  - 

@conference{
author = "Stojanović, Mirjana G. and Maluckov, Aleksandra and Stepić, Milutin and Mančić, Ana",
year = "2023",
abstract = "Flat-band (FB) photonic lattices have been in the focus of researchers since they represent an excellent
platform for studying various fundamental physical phenomena difficult to achieve in the condensed
matter systems. Working with photonic lattices is very comfortable because they are easy to manipulate with
and it is possible to directly observe the wave dynamics. An important property of FBs lattice is that they can
host a complete set of compact localized modes (CLMs), highly robust to environmental noise. Due to lattice
their geometry, it is possible to design artificial gauge field effects which are equivalent to the magnetic field
flux, i. e. the spin-orbit interaction in atomic systems.
We have studied a two-dimensional (2D) linear and nonlinearphotonic lattices dressed by the artificial flux and
have explored the influence of the artificial gauge field on the energy band spectrum. We investigated CLM
in three types of 2D photonic lattices: octagonal-diamond, dice and plus-like lattice. Each of these lattices is
characterized by the presence of diamond plaquettes in the structure. When diamond plaquettes are dressed by
artificial flux, the Aharonov-Bohm effect has caused the appearance of new FBs for certain values of the flux.
The dynamics of the CLMs in the mentioned flux-dressed lattices have been analyzed numerically, using
the Runge-Kutta procedure of the 6th order. To describe the dynamic properties of CLMs, in the presence
of nonlinearity and artificial flux, we calculated some of the following quantities: the participation number,
which is a measure of the mode localization; the mode overlapping, which represents normalized magnitude
of the field overlap; and total intensity distribution. The evolution of these quantities show the efficiency of the
mode compactness andlocalization.",
journal = "WCLOP2023 : 5th World Congress on Lasers, Optics and Photonics : Book of abstracts",
title = "Playing with the artificial flux in diamond plaquettes in different photonic lattices",
pages = "65-65",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11852"
}

Stojanović, M. G., Maluckov, A., Stepić, M.,& Mančić, A.. (2023). Playing with the artificial flux in diamond plaquettes in different photonic lattices. in WCLOP2023 : 5th World Congress on Lasers, Optics and Photonics : Book of abstracts, 65-65.
https://hdl.handle.net/21.15107/rcub_vinar_11852

Stojanović MG, Maluckov A, Stepić M, Mančić A. Playing with the artificial flux in diamond plaquettes in different photonic lattices. in WCLOP2023 : 5th World Congress on Lasers, Optics and Photonics : Book of abstracts. 2023;:65-65.
https://hdl.handle.net/21.15107/rcub_vinar_11852 .

Stojanović, Mirjana G., Maluckov, Aleksandra, Stepić, Milutin, Mančić, Ana, "Playing with the artificial flux in diamond plaquettes in different photonic lattices" in WCLOP2023 : 5th World Congress on Lasers, Optics and Photonics : Book of abstracts (2023):65-65,
https://hdl.handle.net/21.15107/rcub_vinar_11852 .

TY  - CONF
AU  - Stojanović, Mirjana G.
AU  - Mančić, Ana
AU  - Stepić, Milutin
AU  - Maluckov, Aleksandra
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11855
AB  - Flatband (FB) photonic lattices represent ideal testbed for studying transport and localization
properties at the linear level in diverse physical systems [1]. Photonic lattices are easy for manipulation
and investigation of wave dynamics. The photonic lattices offer an ability to design artificial gauge field
effects which are equivalent to the magnetic field flux and the spin-orbit interaction in atomic systems
[2].
The two-dimensional (2D) plus
lattice [3] dressed by the artificial flux can be
experimentally realized by techniques based
on the coupled-spring resonators [4] and
wave-guide networks [5]. Here we tuned the
artificial flux values and studied their effect
on the energy band spectrum and we were
trying to find compact localized modes
(CLMs).
The geometry of the uniform plus
lattice dressed by the artificial flux is Figure
2. Schematic of 2D plus-like lattice with artificial
flux. The unit cell is encircled by a dotted
line.schematically presented in Fig. 1. The
unit cell consists of five sites, linearly coupled with each other with the same intra-cell coupling constant.
The flux of the artificial field modifies the coupling between different unit cell sites to t∙exp(±iϕ/4),
where t is the hopping parameter and ϕ is the artificial flux. In the absence of flux, in the uniform lattice,
the energy spectrum has one fully degenerate FB, centered at zero, and four dispersive bands (DBs) [3].
We have found that this lattice can host the Aharonov-Bohm effect for certain flux values [6]. When
diamond plaquettes are dressed by artificial flux ϕ=π, this lattice spectrum is described by two
momentum independent, fully degenerated FBs, and three DBs. Corresponding CLMs have been
obtained. In the comparison with the flux-free case, we found three different types of fundamental nonorthogonal CLMs now. These CLMs occupy 5 unit cells i.e. are class U=5. The central site amplitude is
zero and all other 4 sites of unit cell have nonzero amplitudes.
PB  - Belgrade : Institute of Physics
C3  - 16th Photonics Workshop : Book of abstracts
T1  - Localized modes in linear flux dressed two-dimensional plus lattice
SP  - 36
EP  - 36
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11855
ER  - 

@conference{
author = "Stojanović, Mirjana G. and Mančić, Ana and Stepić, Milutin and Maluckov, Aleksandra",
year = "2023",
abstract = "Flatband (FB) photonic lattices represent ideal testbed for studying transport and localization
properties at the linear level in diverse physical systems [1]. Photonic lattices are easy for manipulation
and investigation of wave dynamics. The photonic lattices offer an ability to design artificial gauge field
effects which are equivalent to the magnetic field flux and the spin-orbit interaction in atomic systems
[2].
The two-dimensional (2D) plus
lattice [3] dressed by the artificial flux can be
experimentally realized by techniques based
on the coupled-spring resonators [4] and
wave-guide networks [5]. Here we tuned the
artificial flux values and studied their effect
on the energy band spectrum and we were
trying to find compact localized modes
(CLMs).
The geometry of the uniform plus
lattice dressed by the artificial flux is Figure
2. Schematic of 2D plus-like lattice with artificial
flux. The unit cell is encircled by a dotted
line.schematically presented in Fig. 1. The
unit cell consists of five sites, linearly coupled with each other with the same intra-cell coupling constant.
The flux of the artificial field modifies the coupling between different unit cell sites to t∙exp(±iϕ/4),
where t is the hopping parameter and ϕ is the artificial flux. In the absence of flux, in the uniform lattice,
the energy spectrum has one fully degenerate FB, centered at zero, and four dispersive bands (DBs) [3].
We have found that this lattice can host the Aharonov-Bohm effect for certain flux values [6]. When
diamond plaquettes are dressed by artificial flux ϕ=π, this lattice spectrum is described by two
momentum independent, fully degenerated FBs, and three DBs. Corresponding CLMs have been
obtained. In the comparison with the flux-free case, we found three different types of fundamental nonorthogonal CLMs now. These CLMs occupy 5 unit cells i.e. are class U=5. The central site amplitude is
zero and all other 4 sites of unit cell have nonzero amplitudes.",
publisher = "Belgrade : Institute of Physics",
journal = "16th Photonics Workshop : Book of abstracts",
title = "Localized modes in linear flux dressed two-dimensional plus lattice",
pages = "36-36",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11855"
}

Stojanović, M. G., Mančić, A., Stepić, M.,& Maluckov, A.. (2023). Localized modes in linear flux dressed two-dimensional plus lattice. in 16th Photonics Workshop : Book of abstracts
Belgrade : Institute of Physics., 36-36.
https://hdl.handle.net/21.15107/rcub_vinar_11855

Stojanović MG, Mančić A, Stepić M, Maluckov A. Localized modes in linear flux dressed two-dimensional plus lattice. in 16th Photonics Workshop : Book of abstracts. 2023;:36-36.
https://hdl.handle.net/21.15107/rcub_vinar_11855 .

Stojanović, Mirjana G., Mančić, Ana, Stepić, Milutin, Maluckov, Aleksandra, "Localized modes in linear flux dressed two-dimensional plus lattice" in 16th Photonics Workshop : Book of abstracts (2023):36-36,
https://hdl.handle.net/21.15107/rcub_vinar_11855 .

TY  - JOUR
AU  - Stojanović, Mirjana G.
AU  - Mančić, Ana
AU  - Stepić, Milutin
AU  - Maluckov, Aleksandra
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11839
AB  - Two-dimensional dice lattice can be dressed by artificial flux to host the Aharonov-Bohm (AB) caging effect resulting in the occurrence of a fully flatband spectrum. Here, we focus on the dynamics of flatband compact localized eigenmodes shared by a few unit cells in two snowflake configurations. We numerically show the possibility of dynamically stable propagation of two types of compact localized complexes by tuning the nonlinearity. The caging is imprinted in complexes dynamics regardless of the type and strength of nonlinearity. On the other hand, nonlinearity can only affect the appearance of the caged complex. These findings open a new route for the manipulation of structured light in photonic systems.
AB  - Uslovi za generisanje Aharonov-Bohm (AB) efekta mogu se postići u dvodimenzionalnoj rombičnoj rešetki s veštački indukovanim fluksom, što dovodi do formiranja energetskog spektra s potpuno ravnim zonama. U radu, akcenat je stavljen na proučavanje dinamike kompaktnih lokalizovanih svojstvenih moda ravnih zona, koje su izolovane na svega nekoliko jediničnih ćelija rešetke u dve pahuljičaste konfiguracije. Numerički je pokazana mogućnost stabilnog prostiranja dva tipa kompaktnih lokalizovanih kompleksa uz pogodno podešavanje nelinearnih svojstava rešetke. AB zarobljavanje igra dominantnu ulogu kada je reč o dinamici kompleksa, bez obzira na vrstu i jačinu nelinearnosti, koja, sa svoje strane, može uticati na oblik zarobljene strukture. Naša otkrića pružaju nove mogućnosti za unapređivanje načina za manipulisanje svetlošću u fotonskim sistemima.
T2  - Facta universitatis series: Physics, Chemistry and Technology
T1  - Shaping the dynamics of Aharonov-Bohm caged localized modes by nonlinearity
T1  - Oblikovanje dinamike Aharonov-Bohm zarobljenih lokalizovanih moda posredstvom nelinearnosti
VL  - 20
IS  - 1
SP  - 55
EP  - 65
DO  - 10.2298/FUPCT2201055S
ER  - 

@article{
author = "Stojanović, Mirjana G. and Mančić, Ana and Stepić, Milutin and Maluckov, Aleksandra",
year = "2022",
abstract = "Two-dimensional dice lattice can be dressed by artificial flux to host the Aharonov-Bohm (AB) caging effect resulting in the occurrence of a fully flatband spectrum. Here, we focus on the dynamics of flatband compact localized eigenmodes shared by a few unit cells in two snowflake configurations. We numerically show the possibility of dynamically stable propagation of two types of compact localized complexes by tuning the nonlinearity. The caging is imprinted in complexes dynamics regardless of the type and strength of nonlinearity. On the other hand, nonlinearity can only affect the appearance of the caged complex. These findings open a new route for the manipulation of structured light in photonic systems., Uslovi za generisanje Aharonov-Bohm (AB) efekta mogu se postići u dvodimenzionalnoj rombičnoj rešetki s veštački indukovanim fluksom, što dovodi do formiranja energetskog spektra s potpuno ravnim zonama. U radu, akcenat je stavljen na proučavanje dinamike kompaktnih lokalizovanih svojstvenih moda ravnih zona, koje su izolovane na svega nekoliko jediničnih ćelija rešetke u dve pahuljičaste konfiguracije. Numerički je pokazana mogućnost stabilnog prostiranja dva tipa kompaktnih lokalizovanih kompleksa uz pogodno podešavanje nelinearnih svojstava rešetke. AB zarobljavanje igra dominantnu ulogu kada je reč o dinamici kompleksa, bez obzira na vrstu i jačinu nelinearnosti, koja, sa svoje strane, može uticati na oblik zarobljene strukture. Naša otkrića pružaju nove mogućnosti za unapređivanje načina za manipulisanje svetlošću u fotonskim sistemima.",
journal = "Facta universitatis series: Physics, Chemistry and Technology",
title = "Shaping the dynamics of Aharonov-Bohm caged localized modes by nonlinearity, Oblikovanje dinamike Aharonov-Bohm zarobljenih lokalizovanih moda posredstvom nelinearnosti",
volume = "20",
number = "1",
pages = "55-65",
doi = "10.2298/FUPCT2201055S"
}

Stojanović, M. G., Mančić, A., Stepić, M.,& Maluckov, A.. (2022). Shaping the dynamics of Aharonov-Bohm caged localized modes by nonlinearity. in Facta universitatis series: Physics, Chemistry and Technology, 20(1), 55-65.
https://doi.org/10.2298/FUPCT2201055S

Stojanović MG, Mančić A, Stepić M, Maluckov A. Shaping the dynamics of Aharonov-Bohm caged localized modes by nonlinearity. in Facta universitatis series: Physics, Chemistry and Technology. 2022;20(1):55-65.
doi:10.2298/FUPCT2201055S .

Stojanović, Mirjana G., Mančić, Ana, Stepić, Milutin, Maluckov, Aleksandra, "Shaping the dynamics of Aharonov-Bohm caged localized modes by nonlinearity" in Facta universitatis series: Physics, Chemistry and Technology, 20, no. 1 (2022):55-65,
https://doi.org/10.2298/FUPCT2201055S . .

TY  - CONF
AU  - Stepić, Milutin
AU  - Maluckov, Aleksandra
AU  - Mančić, Ana
AU  - Stojanović, Mirjana G.
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11851
AB  - Flatband (FB) photonic systems have been in the spotlight of researchers since they
represent an advantageous testbed for studying transport and localization properties at the linear level [1]. Among variety of platforms where flatbands have been
realized photonic lattices have been established as the ideal ones, since working
with them is very comfortable - they are easy to manipulate with and it is possible
to directly observe the wave dynamics. Due to their geometry, it is possible to design artificial gauge field effects which are equivalent to the magnetic field flux, i.
e. the spin-orbit interaction in atomic systems [2].
Here, we study a two-dimensional (2D) pluslike lattice [3], dressed by the artificial
flux, which could be realized by experimental techniques based on the coupledspring resonators [4] and wave-guide networks [5]. We investigate the influence of
the artificial flux on the energy band spectrum and the idea is to find the compact
localized modes (CLM).
The unit cell of the plus lattice consists of five sites, with real intra-cell hopping
represented by the coupling coefficient. The flux of the artificial field modifies the
coupling between different unit cell sites to t∙exp(±iϕ/4), where tis the hopping parameter and ϕ is the artificial flux. In the absence of flux, in the uniform lattice,
the energy spectrum has one fully degenerate FB, centered at zero, between two
dispersive bands (DBs), each of which is being accompanied with the other mirror
symmetric DB [3]. We have found that 2D plus lattice can be dressed by artificial
flux to host the Aharonov-Bohm (AB) effect. This effect causes the appearance of
flat zones in the energy spectrum of the lattice. Hence, when diamond plaquettes are dressed by artificial flux ϕ=π, this lattice spectrum is described by two momentum independent, fully degenerated FBs, and three DBs.
The dynamics of CLMs in 2D flux-dressed plus lattice can be analyzed numerically,
adopting the Runge-Kutta procedure of the 6th order. In order to scan the dynamical properties of the CLMs we will calculate some of the following quantities: the
participation number, which is a measure of the mode localization; the mode overlapping, which represents normalized magnitude of the field overlap; and total intensity distribution. The evolution of these quantities will show the efficiency of
the mode compactness-localization.
C3  - BPU11 : 11th International Conference of the Balkan Physical Union
T1  - Existence and dynamics of eigenmodes in linear flux dressed two-dimensional plus lattice
VL  - 427
SP  - 149
EP  - 150
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11851
ER  - 

@conference{
author = "Stepić, Milutin and Maluckov, Aleksandra and Mančić, Ana and Stojanović, Mirjana G.",
year = "2022",
abstract = "Flatband (FB) photonic systems have been in the spotlight of researchers since they
represent an advantageous testbed for studying transport and localization properties at the linear level [1]. Among variety of platforms where flatbands have been
realized photonic lattices have been established as the ideal ones, since working
with them is very comfortable - they are easy to manipulate with and it is possible
to directly observe the wave dynamics. Due to their geometry, it is possible to design artificial gauge field effects which are equivalent to the magnetic field flux, i.
e. the spin-orbit interaction in atomic systems [2].
Here, we study a two-dimensional (2D) pluslike lattice [3], dressed by the artificial
flux, which could be realized by experimental techniques based on the coupledspring resonators [4] and wave-guide networks [5]. We investigate the influence of
the artificial flux on the energy band spectrum and the idea is to find the compact
localized modes (CLM).
The unit cell of the plus lattice consists of five sites, with real intra-cell hopping
represented by the coupling coefficient. The flux of the artificial field modifies the
coupling between different unit cell sites to t∙exp(±iϕ/4), where tis the hopping parameter and ϕ is the artificial flux. In the absence of flux, in the uniform lattice,
the energy spectrum has one fully degenerate FB, centered at zero, between two
dispersive bands (DBs), each of which is being accompanied with the other mirror
symmetric DB [3]. We have found that 2D plus lattice can be dressed by artificial
flux to host the Aharonov-Bohm (AB) effect. This effect causes the appearance of
flat zones in the energy spectrum of the lattice. Hence, when diamond plaquettes are dressed by artificial flux ϕ=π, this lattice spectrum is described by two momentum independent, fully degenerated FBs, and three DBs.
The dynamics of CLMs in 2D flux-dressed plus lattice can be analyzed numerically,
adopting the Runge-Kutta procedure of the 6th order. In order to scan the dynamical properties of the CLMs we will calculate some of the following quantities: the
participation number, which is a measure of the mode localization; the mode overlapping, which represents normalized magnitude of the field overlap; and total intensity distribution. The evolution of these quantities will show the efficiency of
the mode compactness-localization.",
journal = "BPU11 : 11th International Conference of the Balkan Physical Union",
title = "Existence and dynamics of eigenmodes in linear flux dressed two-dimensional plus lattice",
volume = "427",
pages = "149-150",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11851"
}

Stepić, M., Maluckov, A., Mančić, A.,& Stojanović, M. G.. (2022). Existence and dynamics of eigenmodes in linear flux dressed two-dimensional plus lattice. in BPU11 : 11th International Conference of the Balkan Physical Union, 427, 149-150.
https://hdl.handle.net/21.15107/rcub_vinar_11851

Stepić M, Maluckov A, Mančić A, Stojanović MG. Existence and dynamics of eigenmodes in linear flux dressed two-dimensional plus lattice. in BPU11 : 11th International Conference of the Balkan Physical Union. 2022;427:149-150.
https://hdl.handle.net/21.15107/rcub_vinar_11851 .

Stepić, Milutin, Maluckov, Aleksandra, Mančić, Ana, Stojanović, Mirjana G., "Existence and dynamics of eigenmodes in linear flux dressed two-dimensional plus lattice" in BPU11 : 11th International Conference of the Balkan Physical Union, 427 (2022):149-150,
https://hdl.handle.net/21.15107/rcub_vinar_11851 .

TY  - CONF
AU  - Stojanović, Mirjana G.
AU  - Mančić, Ana
AU  - Stepić, Milutin
AU  - Maluckov, Aleksandra
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11854
C3  - 15th Photonics Workshop : Book of abstracts
T1  - Dynamics of nonlinear Aharonov-Bohm caged compact localized modes in Dice lattice
SP  - 28
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11854
ER  - 

@conference{
author = "Stojanović, Mirjana G. and Mančić, Ana and Stepić, Milutin and Maluckov, Aleksandra",
year = "2022",
journal = "15th Photonics Workshop : Book of abstracts",
title = "Dynamics of nonlinear Aharonov-Bohm caged compact localized modes in Dice lattice",
pages = "28",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11854"
}

Stojanović, M. G., Mančić, A., Stepić, M.,& Maluckov, A.. (2022). Dynamics of nonlinear Aharonov-Bohm caged compact localized modes in Dice lattice. in 15th Photonics Workshop : Book of abstracts, 28.
https://hdl.handle.net/21.15107/rcub_vinar_11854

Stojanović MG, Mančić A, Stepić M, Maluckov A. Dynamics of nonlinear Aharonov-Bohm caged compact localized modes in Dice lattice. in 15th Photonics Workshop : Book of abstracts. 2022;:28.
https://hdl.handle.net/21.15107/rcub_vinar_11854 .

Stojanović, Mirjana G., Mančić, Ana, Stepić, Milutin, Maluckov, Aleksandra, "Dynamics of nonlinear Aharonov-Bohm caged compact localized modes in Dice lattice" in 15th Photonics Workshop : Book of abstracts (2022):28,
https://hdl.handle.net/21.15107/rcub_vinar_11854 .

TY  - JOUR
AU  - Mančić, Ana
AU  - Stojanović, Mirjana G.
AU  - Stepić, Milutin
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10965
AB  - It was studied a photonic linear two-dimensional plus lattice dressed by the artificial flux and explored the influence of the artificial gauge field on the energy band spectrum. The Aharonov-Bohm effect has caused the appearance of flat zones and for certain values of the flux, the lattice spectrum has been described by two momentum independent, fully degenerated flatbands and three dispersive bands. Three different types of fundamental non-orthogonal compactons have been obtained. The findings presented in this study could be tested in practice and they may be used for probing different artificial flatband systems, e. g. ultracold atoms in optical lattices, polariton condensates etc.
AB  - U ovom radu proučavana je fotonska linearna dvodimenziona plus rešetka tretirana fluksom kalibracionog polja kao i uticaj veštačkog kalibracionog polja, na energetski spektar. Usled Aharonov-Bomovog efekta dolazi do pojave ravnih zona i za određene vrednosti fluksa energetski spektar rešetke može se opisati sa dve potpuno degenerisane ravne zone i tri disperzivne zone. Pronađena su tri različita tipa fundamentalnih ne-ortogonalnih kompaktona. Predstavljeni rezultati mogu se proveriti u praksi i imaju potencijal za primenu u različitim okruženjima, kao što su mreže superprovodnih žica, topološke rešetke itd.
T2  - Advanced Technologies
T1  - Linear compact localized modes in flux-dressed two-dimensional plus lattice
T1  - Linearne kompaktne lokalizovane mode u dvodimenzionalnoj, fluksom tretiranoj, plus rešetki
VL  - 11
IS  - 2
SP  - 36
EP  - 39
DO  - 10.5937/savteh2202036M
ER  - 

@article{
author = "Mančić, Ana and Stojanović, Mirjana G. and Stepić, Milutin",
year = "2022",
abstract = "It was studied a photonic linear two-dimensional plus lattice dressed by the artificial flux and explored the influence of the artificial gauge field on the energy band spectrum. The Aharonov-Bohm effect has caused the appearance of flat zones and for certain values of the flux, the lattice spectrum has been described by two momentum independent, fully degenerated flatbands and three dispersive bands. Three different types of fundamental non-orthogonal compactons have been obtained. The findings presented in this study could be tested in practice and they may be used for probing different artificial flatband systems, e. g. ultracold atoms in optical lattices, polariton condensates etc., U ovom radu proučavana je fotonska linearna dvodimenziona plus rešetka tretirana fluksom kalibracionog polja kao i uticaj veštačkog kalibracionog polja, na energetski spektar. Usled Aharonov-Bomovog efekta dolazi do pojave ravnih zona i za određene vrednosti fluksa energetski spektar rešetke može se opisati sa dve potpuno degenerisane ravne zone i tri disperzivne zone. Pronađena su tri različita tipa fundamentalnih ne-ortogonalnih kompaktona. Predstavljeni rezultati mogu se proveriti u praksi i imaju potencijal za primenu u različitim okruženjima, kao što su mreže superprovodnih žica, topološke rešetke itd.",
journal = "Advanced Technologies",
title = "Linear compact localized modes in flux-dressed two-dimensional plus lattice, Linearne kompaktne lokalizovane mode u dvodimenzionalnoj, fluksom tretiranoj, plus rešetki",
volume = "11",
number = "2",
pages = "36-39",
doi = "10.5937/savteh2202036M"
}

Mančić, A., Stojanović, M. G.,& Stepić, M.. (2022). Linear compact localized modes in flux-dressed two-dimensional plus lattice. in Advanced Technologies, 11(2), 36-39.
https://doi.org/10.5937/savteh2202036M

Mančić A, Stojanović MG, Stepić M. Linear compact localized modes in flux-dressed two-dimensional plus lattice. in Advanced Technologies. 2022;11(2):36-39.
doi:10.5937/savteh2202036M .

Mančić, Ana, Stojanović, Mirjana G., Stepić, Milutin, "Linear compact localized modes in flux-dressed two-dimensional plus lattice" in Advanced Technologies, 11, no. 2 (2022):36-39,
https://doi.org/10.5937/savteh2202036M . .

TY  - JOUR
AU  - Ivanović, Marija D.
AU  - Mančić, Ana
AU  - Hermann-Avigliano, Carla
AU  - Hadžievski, Ljupčo
AU  - Maluckov, Aleksandra
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8837
AB  - In this paper, we establish a new scheme for identification and classification of high intensity events generated by the propagation of light through a photorefractive SBN crystal. Among these events, which are the inevitable consequence of the development of modulation instability, are speckling and soliton-like patterns. The usual classifiers, developed on statistical measures, such as the significant intensity, often provide only a partial characterization of these events. Here, we try to overcome this deficiency by implementing the convolution neural network method to relate experimental data of light intensity distribution and corresponding numerical outputs with different high intensity regimes. The train and test sets are formed of experimentally obtained intensity profiles at the crystal output facet and corresponding numerical profiles. The accuracy of detection of speckles reaches maximum value of 100%, while the accuracy of solitons and caustic detection is above 97%. These performances are promising for the creation of neural network based routines for prediction of extreme events in wave media. © 2020 IOP Publishing Ltd.
T2  - Journal of Optics
T1  - Deep learning-based classification of high intensity light patterns in photorefractive crystals
VL  - 22
IS  - 3
SP  - 035504
DO  - 10.1088/2040-8986/ab70f0
ER  - 

@article{
author = "Ivanović, Marija D. and Mančić, Ana and Hermann-Avigliano, Carla and Hadžievski, Ljupčo and Maluckov, Aleksandra",
year = "2020",
abstract = "In this paper, we establish a new scheme for identification and classification of high intensity events generated by the propagation of light through a photorefractive SBN crystal. Among these events, which are the inevitable consequence of the development of modulation instability, are speckling and soliton-like patterns. The usual classifiers, developed on statistical measures, such as the significant intensity, often provide only a partial characterization of these events. Here, we try to overcome this deficiency by implementing the convolution neural network method to relate experimental data of light intensity distribution and corresponding numerical outputs with different high intensity regimes. The train and test sets are formed of experimentally obtained intensity profiles at the crystal output facet and corresponding numerical profiles. The accuracy of detection of speckles reaches maximum value of 100%, while the accuracy of solitons and caustic detection is above 97%. These performances are promising for the creation of neural network based routines for prediction of extreme events in wave media. © 2020 IOP Publishing Ltd.",
journal = "Journal of Optics",
title = "Deep learning-based classification of high intensity light patterns in photorefractive crystals",
volume = "22",
number = "3",
pages = "035504",
doi = "10.1088/2040-8986/ab70f0"
}

Ivanović, M. D., Mančić, A., Hermann-Avigliano, C., Hadžievski, L.,& Maluckov, A.. (2020). Deep learning-based classification of high intensity light patterns in photorefractive crystals. in Journal of Optics, 22(3), 035504.
https://doi.org/10.1088/2040-8986/ab70f0

Ivanović MD, Mančić A, Hermann-Avigliano C, Hadžievski L, Maluckov A. Deep learning-based classification of high intensity light patterns in photorefractive crystals. in Journal of Optics. 2020;22(3):035504.
doi:10.1088/2040-8986/ab70f0 .

Ivanović, Marija D., Mančić, Ana, Hermann-Avigliano, Carla, Hadžievski, Ljupčo, Maluckov, Aleksandra, "Deep learning-based classification of high intensity light patterns in photorefractive crystals" in Journal of Optics, 22, no. 3 (2020):035504,
https://doi.org/10.1088/2040-8986/ab70f0 . .

TY  - CONF
AU  - Mančić, Ana
AU  - Ivanović, Marija
AU  - Hermann-Avigliano, C.
AU  - Hadžievski, Ljupčo
AU  - Maluckov, Aleksandra
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11887
AB  - Extreme events (EE) continue to challenge researches in diverse fields of natural and social
sciences [1]. The traces of different dynamics of huge intensity light events recently observed
experimentally on the output facets of a SBN photorefractive crystal were challenge of this kind
for us. We investigate the statistical properties of high intensity events by adopting the standard
methods of the EEs detection and classification [2]. It was shown that these events were
inevitable in our experiment for a large set of parameters, which was confirmed by a simple
theoretical model based on the two-dimensional Schrödinger equation with saturable
nonlinearity. We distinguished two main EE regimes, one with speckles pattern and another one
with soliton-like structures.
In order to classify different EEs regimes we used the achievements of the deep learning
methods applied in various fields of science and implemented them in the EE framework [3]. We
applied the convolution neural network (CNN) architecture consisting of the 3-stage feature
extractor and a fully connected multi-layer perceptron to classify different high light intensity
profiles. These profiles were formed in the experiment and in the corresponding numerical
simulations of the light propagation through the SBN crystal [2]. Each feature learning stage
incorporated the convolution, ReLU nonlinear activation and max-pooling. Three high intensity
profiles: caustic-, soliton- and speckling-like were confronted to the linear dispersion one (i. e. no
RW regime). The train and test sets of data were formed from the light intensity profiles. The
network architecture and optimal hyperparameters were selected using 10 fold cross-validation.
The model performances were evaluated on the blindfolded test set after the model was trained
on the whole training set. When the combination of theoretical and experimental data were
considered, the overall accuracy of selecting the soliton and speckling regimes, which can be
associated with different types of extreme events was above 97%. The caustic regime which can
be considered as a nucleus of high intensity events was extracted correctly from the other
regimes, too with the accuracy of 97.51 %. Satisfying performances of the CNN based detector
and classifier of the high intensity events were an encouraging outcome for continuing the study.
We are interested in going towards the prediction of the system preferences for the formation of
high intensity events using the deep learning strategy, since these events usually have a
devastating effect in the systems.
PB  - Belgrade : Vinča Institute of Nuclear Sciences, University of Belgrade
C3  - PHOTONICA2019 : 7th International School and Conference on Photonics & Machine Learning with Photonics Symposium : Book of abstracts
T1  - Deep learning based classification of high intensity light patterns in photorefractive crystals
SP  - 175
EP  - 175
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11887
ER  - 

@conference{
author = "Mančić, Ana and Ivanović, Marija and Hermann-Avigliano, C. and Hadžievski, Ljupčo and Maluckov, Aleksandra",
year = "2019",
abstract = "Extreme events (EE) continue to challenge researches in diverse fields of natural and social
sciences [1]. The traces of different dynamics of huge intensity light events recently observed
experimentally on the output facets of a SBN photorefractive crystal were challenge of this kind
for us. We investigate the statistical properties of high intensity events by adopting the standard
methods of the EEs detection and classification [2]. It was shown that these events were
inevitable in our experiment for a large set of parameters, which was confirmed by a simple
theoretical model based on the two-dimensional Schrödinger equation with saturable
nonlinearity. We distinguished two main EE regimes, one with speckles pattern and another one
with soliton-like structures.
In order to classify different EEs regimes we used the achievements of the deep learning
methods applied in various fields of science and implemented them in the EE framework [3]. We
applied the convolution neural network (CNN) architecture consisting of the 3-stage feature
extractor and a fully connected multi-layer perceptron to classify different high light intensity
profiles. These profiles were formed in the experiment and in the corresponding numerical
simulations of the light propagation through the SBN crystal [2]. Each feature learning stage
incorporated the convolution, ReLU nonlinear activation and max-pooling. Three high intensity
profiles: caustic-, soliton- and speckling-like were confronted to the linear dispersion one (i. e. no
RW regime). The train and test sets of data were formed from the light intensity profiles. The
network architecture and optimal hyperparameters were selected using 10 fold cross-validation.
The model performances were evaluated on the blindfolded test set after the model was trained
on the whole training set. When the combination of theoretical and experimental data were
considered, the overall accuracy of selecting the soliton and speckling regimes, which can be
associated with different types of extreme events was above 97%. The caustic regime which can
be considered as a nucleus of high intensity events was extracted correctly from the other
regimes, too with the accuracy of 97.51 %. Satisfying performances of the CNN based detector
and classifier of the high intensity events were an encouraging outcome for continuing the study.
We are interested in going towards the prediction of the system preferences for the formation of
high intensity events using the deep learning strategy, since these events usually have a
devastating effect in the systems.",
publisher = "Belgrade : Vinča Institute of Nuclear Sciences, University of Belgrade",
journal = "PHOTONICA2019 : 7th International School and Conference on Photonics & Machine Learning with Photonics Symposium : Book of abstracts",
title = "Deep learning based classification of high intensity light patterns in photorefractive crystals",
pages = "175-175",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11887"
}

Mančić, A., Ivanović, M., Hermann-Avigliano, C., Hadžievski, L.,& Maluckov, A.. (2019). Deep learning based classification of high intensity light patterns in photorefractive crystals. in PHOTONICA2019 : 7th International School and Conference on Photonics & Machine Learning with Photonics Symposium : Book of abstracts
Belgrade : Vinča Institute of Nuclear Sciences, University of Belgrade., 175-175.
https://hdl.handle.net/21.15107/rcub_vinar_11887

Mančić A, Ivanović M, Hermann-Avigliano C, Hadžievski L, Maluckov A. Deep learning based classification of high intensity light patterns in photorefractive crystals. in PHOTONICA2019 : 7th International School and Conference on Photonics & Machine Learning with Photonics Symposium : Book of abstracts. 2019;:175-175.
https://hdl.handle.net/21.15107/rcub_vinar_11887 .

Mančić, Ana, Ivanović, Marija, Hermann-Avigliano, C., Hadžievski, Ljupčo, Maluckov, Aleksandra, "Deep learning based classification of high intensity light patterns in photorefractive crystals" in PHOTONICA2019 : 7th International School and Conference on Photonics & Machine Learning with Photonics Symposium : Book of abstracts (2019):175-175,
https://hdl.handle.net/21.15107/rcub_vinar_11887 .

TY  - CONF
AU  - Veljković, M.
AU  - Mančić, Ana
AU  - Milović, M.
AU  - Maluckov, Aleksandra
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11869
AB  - This research explores a supercontinuum (SC) generation in silica based highly nonlinear photonic crystal fiber of near infrared window, suitable for application in the field of telecommunications [1]. Results obtained here could be of interest in attempts to improve the characteristics of multi-wavelength sources for dense wavelength division multiplexing (DWDM) systems. We study numerically SC dynamics in both spectral and temporal domain in three different optical windows, at referent wavelengths of 835nm, 1300nm and 1550 nm. The dependence of SC properties on the input pulse power, shape and the value of the chirp is investigated in details. It has been shown that the most intense spread of SC spectrum at fiber output is obtained in the third optical window, while the input signal shape, power and duration stayed unchanged [2]. The shape of the initial pulse was the most influential in the second optical window, where the simulated SC has flat and smooth profile, covering the wavelength range from 1000 nm to 2000 nm. In addition, we examine the SC spectrum coherence in all of the three optical windows with respect to different input pulses. On the other hand, the richest SC dynamics is observed in the first window, where the appearance of high intensity events of the rogue wave type is reported [3].
PB  - Belgrade : Vinča Institute of Nuclear Sciences, University of Belgrade
C3  - PHOTONICA2019 : 7th International School and Conference on Photonics & Machine Learning with Photonics Symposium : Book of abstracts
T1  - Numerical study of the supercontinuum generation in the telecommunications windows in photonic crystal fiber
SP  - 88
EP  - 88
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11869
ER  - 

@conference{
author = "Veljković, M. and Mančić, Ana and Milović, M. and Maluckov, Aleksandra",
year = "2019",
abstract = "This research explores a supercontinuum (SC) generation in silica based highly nonlinear photonic crystal fiber of near infrared window, suitable for application in the field of telecommunications [1]. Results obtained here could be of interest in attempts to improve the characteristics of multi-wavelength sources for dense wavelength division multiplexing (DWDM) systems. We study numerically SC dynamics in both spectral and temporal domain in three different optical windows, at referent wavelengths of 835nm, 1300nm and 1550 nm. The dependence of SC properties on the input pulse power, shape and the value of the chirp is investigated in details. It has been shown that the most intense spread of SC spectrum at fiber output is obtained in the third optical window, while the input signal shape, power and duration stayed unchanged [2]. The shape of the initial pulse was the most influential in the second optical window, where the simulated SC has flat and smooth profile, covering the wavelength range from 1000 nm to 2000 nm. In addition, we examine the SC spectrum coherence in all of the three optical windows with respect to different input pulses. On the other hand, the richest SC dynamics is observed in the first window, where the appearance of high intensity events of the rogue wave type is reported [3].",
publisher = "Belgrade : Vinča Institute of Nuclear Sciences, University of Belgrade",
journal = "PHOTONICA2019 : 7th International School and Conference on Photonics & Machine Learning with Photonics Symposium : Book of abstracts",
title = "Numerical study of the supercontinuum generation in the telecommunications windows in photonic crystal fiber",
pages = "88-88",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11869"
}

Veljković, M., Mančić, A., Milović, M.,& Maluckov, A.. (2019). Numerical study of the supercontinuum generation in the telecommunications windows in photonic crystal fiber. in PHOTONICA2019 : 7th International School and Conference on Photonics & Machine Learning with Photonics Symposium : Book of abstracts
Belgrade : Vinča Institute of Nuclear Sciences, University of Belgrade., 88-88.
https://hdl.handle.net/21.15107/rcub_vinar_11869

Veljković M, Mančić A, Milović M, Maluckov A. Numerical study of the supercontinuum generation in the telecommunications windows in photonic crystal fiber. in PHOTONICA2019 : 7th International School and Conference on Photonics & Machine Learning with Photonics Symposium : Book of abstracts. 2019;:88-88.
https://hdl.handle.net/21.15107/rcub_vinar_11869 .

Veljković, M., Mančić, Ana, Milović, M., Maluckov, Aleksandra, "Numerical study of the supercontinuum generation in the telecommunications windows in photonic crystal fiber" in PHOTONICA2019 : 7th International School and Conference on Photonics & Machine Learning with Photonics Symposium : Book of abstracts (2019):88-88,
https://hdl.handle.net/21.15107/rcub_vinar_11869 .

TY  - JOUR
AU  - Hermann-Avigliano, Carla
AU  - Salinas, I A
AU  - Rivas, D. A.
AU  - Real, Bastian
AU  - Mančić, Ana
AU  - Mejía-Cortés, Cristian
AU  - Maluckov, Aleksandra
AU  - Poblete, Rodrigo Andres Vicencio
PY  - 2019
UR  - https://www.osapublishing.org/abstract.cfm?URI=ol-44-11-2807
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8223
AB  - We report on the excitation of large-amplitude waves, with a probability of around 1% of total peaks, on a photorefractive SBN crystal by using a simple experimental setup at room temperature. We excite the system using a narrow Gaussian beam and observe different dynamical regimes tailored by the value and time rate of an applied voltage. We identify two main dynamical regimes: a caustic one for energy spreading and a speckling one for peak emergence. Our observations are well described by a two-dimensional Schrödinger model with saturable local nonlinearity. © 2019 Optical Society of America.
T2  - Optics Letters
T1  - Spatial rogue waves in photorefractive SBN crystals
VL  - 44
IS  - 11
SP  - 2807
DO  - 10.1364/OL.44.002807
ER  - 

@article{
author = "Hermann-Avigliano, Carla and Salinas, I A and Rivas, D. A. and Real, Bastian and Mančić, Ana and Mejía-Cortés, Cristian and Maluckov, Aleksandra and Poblete, Rodrigo Andres Vicencio",
year = "2019",
abstract = "We report on the excitation of large-amplitude waves, with a probability of around 1% of total peaks, on a photorefractive SBN crystal by using a simple experimental setup at room temperature. We excite the system using a narrow Gaussian beam and observe different dynamical regimes tailored by the value and time rate of an applied voltage. We identify two main dynamical regimes: a caustic one for energy spreading and a speckling one for peak emergence. Our observations are well described by a two-dimensional Schrödinger model with saturable local nonlinearity. © 2019 Optical Society of America.",
journal = "Optics Letters",
title = "Spatial rogue waves in photorefractive SBN crystals",
volume = "44",
number = "11",
pages = "2807",
doi = "10.1364/OL.44.002807"
}

Hermann-Avigliano, C., Salinas, I. A., Rivas, D. A., Real, B., Mančić, A., Mejía-Cortés, C., Maluckov, A.,& Poblete, R. A. V.. (2019). Spatial rogue waves in photorefractive SBN crystals. in Optics Letters, 44(11), 2807.
https://doi.org/10.1364/OL.44.002807

Hermann-Avigliano C, Salinas IA, Rivas DA, Real B, Mančić A, Mejía-Cortés C, Maluckov A, Poblete RAV. Spatial rogue waves in photorefractive SBN crystals. in Optics Letters. 2019;44(11):2807.
doi:10.1364/OL.44.002807 .

Hermann-Avigliano, Carla, Salinas, I A, Rivas, D. A., Real, Bastian, Mančić, Ana, Mejía-Cortés, Cristian, Maluckov, Aleksandra, Poblete, Rodrigo Andres Vicencio, "Spatial rogue waves in photorefractive SBN crystals" in Optics Letters, 44, no. 11 (2019):2807,
https://doi.org/10.1364/OL.44.002807 . .

TY  - JOUR
AU  - Veljković, Marija
AU  - Mančić, Ana
AU  - Milović, Daniela M.
AU  - Maluckov, Aleksandra
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8453
AB  - We examine the supercontinuum (SC) dependence on the chirp of the input laser beam and effects of input pulse noise. Simultaneously, we investigate the relation between the SC generation and creation of localized high intensity events. We show that despite their low probability, these events inevitably appear in the SC in our setup. Their devastating role in the information transfer stimulates the research aiming for a deeper understanding of these phenomena which is of high importance in different fields of science, ranging from material science to telecommunications. This study can be considered as a step forward in tracing a route for controlling high intensity events. © 2019 Elsevier GmbH
T2  - Optik
T1  - Numerical study of high intensity events in the supercontinuum generation in the presence of input chirp
VL  - 196
SP  - 163180
DO  - 10.1016/j.ijleo.2019.163180
ER  - 

@article{
author = "Veljković, Marija and Mančić, Ana and Milović, Daniela M. and Maluckov, Aleksandra",
year = "2019",
abstract = "We examine the supercontinuum (SC) dependence on the chirp of the input laser beam and effects of input pulse noise. Simultaneously, we investigate the relation between the SC generation and creation of localized high intensity events. We show that despite their low probability, these events inevitably appear in the SC in our setup. Their devastating role in the information transfer stimulates the research aiming for a deeper understanding of these phenomena which is of high importance in different fields of science, ranging from material science to telecommunications. This study can be considered as a step forward in tracing a route for controlling high intensity events. © 2019 Elsevier GmbH",
journal = "Optik",
title = "Numerical study of high intensity events in the supercontinuum generation in the presence of input chirp",
volume = "196",
pages = "163180",
doi = "10.1016/j.ijleo.2019.163180"
}

Veljković, M., Mančić, A., Milović, D. M.,& Maluckov, A.. (2019). Numerical study of high intensity events in the supercontinuum generation in the presence of input chirp. in Optik, 196, 163180.
https://doi.org/10.1016/j.ijleo.2019.163180

Veljković M, Mančić A, Milović DM, Maluckov A. Numerical study of high intensity events in the supercontinuum generation in the presence of input chirp. in Optik. 2019;196:163180.
doi:10.1016/j.ijleo.2019.163180 .

Veljković, Marija, Mančić, Ana, Milović, Daniela M., Maluckov, Aleksandra, "Numerical study of high intensity events in the supercontinuum generation in the presence of input chirp" in Optik, 196 (2019):163180,
https://doi.org/10.1016/j.ijleo.2019.163180 . .

TY  - JOUR
AU  - Mančić, Ana
AU  - Baronio, Fabio
AU  - Hadžievski, Ljupčo
AU  - Wabnitz, Stefan
AU  - Maluckov, Aleksandra
PY  - 2018
UR  - https://link.aps.org/doi/10.1103/PhysRevE.98.012209
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7797
AB  - We present a statistical analysis based on the height and return-time probabilities of high-amplitude wave events in both focusing and defocusing Manakov systems. We find that analytical rational or semirational solutions, associated with extreme, rogue wave (RW) structures, are the leading high-amplitude events in this system. We define the thresholds for classifying an extreme wave event as a RW. Our results indicate that there is a strong relationship between the type of RW and the mechanism which is responsible for its creation. Initially, high-amplitude events originate from modulation instability. Upon subsequent evolution, the interaction among these events prevails as the mechanism for RW creation. We suggest a strategy for confirming the basic properties of different extreme events. This involves the definition of proper statistical measures at each stage of the RW dynamics. Our results point to the need for redefining criteria for identifying RW events.
T2  - Physical Review E
T1  - Statistics of vector Manakov rogue waves
VL  - 98
IS  - 1
SP  - 012209
DO  - 10.1103/PhysRevE.98.012209
ER  - 

@article{
author = "Mančić, Ana and Baronio, Fabio and Hadžievski, Ljupčo and Wabnitz, Stefan and Maluckov, Aleksandra",
year = "2018",
abstract = "We present a statistical analysis based on the height and return-time probabilities of high-amplitude wave events in both focusing and defocusing Manakov systems. We find that analytical rational or semirational solutions, associated with extreme, rogue wave (RW) structures, are the leading high-amplitude events in this system. We define the thresholds for classifying an extreme wave event as a RW. Our results indicate that there is a strong relationship between the type of RW and the mechanism which is responsible for its creation. Initially, high-amplitude events originate from modulation instability. Upon subsequent evolution, the interaction among these events prevails as the mechanism for RW creation. We suggest a strategy for confirming the basic properties of different extreme events. This involves the definition of proper statistical measures at each stage of the RW dynamics. Our results point to the need for redefining criteria for identifying RW events.",
journal = "Physical Review E",
title = "Statistics of vector Manakov rogue waves",
volume = "98",
number = "1",
pages = "012209",
doi = "10.1103/PhysRevE.98.012209"
}

Mančić, A., Baronio, F., Hadžievski, L., Wabnitz, S.,& Maluckov, A.. (2018). Statistics of vector Manakov rogue waves. in Physical Review E, 98(1), 012209.
https://doi.org/10.1103/PhysRevE.98.012209

Mančić A, Baronio F, Hadžievski L, Wabnitz S, Maluckov A. Statistics of vector Manakov rogue waves. in Physical Review E. 2018;98(1):012209.
doi:10.1103/PhysRevE.98.012209 .

Mančić, Ana, Baronio, Fabio, Hadžievski, Ljupčo, Wabnitz, Stefan, Maluckov, Aleksandra, "Statistics of vector Manakov rogue waves" in Physical Review E, 98, no. 1 (2018):012209,
https://doi.org/10.1103/PhysRevE.98.012209 . .

TY  - JOUR
AU  - Mančić, Ana
AU  - Baronio, Fabio
AU  - Hadžievski, Ljupčo
AU  - Wabnitz, Stefan
AU  - Maluckov, Aleksandra
PY  - 2018
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7798
UR  - https://arxiv.org/pdf/1807.01941.pdf
AB  - We present a statistical analysis based on the height and return-time probabilities of high-amplitude wave events in both focusing and defocusing Manakov systems. We find that analytical rational or semirational solutions, associated with extreme, rogue wave (RW) structures, are the leading high-amplitude events in this system. We define the thresholds for classifying an extreme wave event as a RW. Our results indicate that there is a strong relationship between the type of RW and the mechanism which is responsible for its creation. Initially, high-amplitude events originate from modulation instability. Upon subsequent evolution, the interaction among these events prevails as the mechanism for RW creation. We suggest a strategy for confirming the basic properties of different extreme events. This involves the definition of proper statistical measures at each stage of the RW dynamics. Our results point to the need for redefining criteria for identifying RW events.
T2  - Physical Review E
T1  - Statistics of vector Manakov rogue waves
VL  - 98
IS  - 1
SP  - 012209
DO  - 10.1103/PhysRevE.98.012209
ER  - 

@article{
author = "Mančić, Ana and Baronio, Fabio and Hadžievski, Ljupčo and Wabnitz, Stefan and Maluckov, Aleksandra",
year = "2018",
abstract = "We present a statistical analysis based on the height and return-time probabilities of high-amplitude wave events in both focusing and defocusing Manakov systems. We find that analytical rational or semirational solutions, associated with extreme, rogue wave (RW) structures, are the leading high-amplitude events in this system. We define the thresholds for classifying an extreme wave event as a RW. Our results indicate that there is a strong relationship between the type of RW and the mechanism which is responsible for its creation. Initially, high-amplitude events originate from modulation instability. Upon subsequent evolution, the interaction among these events prevails as the mechanism for RW creation. We suggest a strategy for confirming the basic properties of different extreme events. This involves the definition of proper statistical measures at each stage of the RW dynamics. Our results point to the need for redefining criteria for identifying RW events.",
journal = "Physical Review E",
title = "Statistics of vector Manakov rogue waves",
volume = "98",
number = "1",
pages = "012209",
doi = "10.1103/PhysRevE.98.012209"
}

Mančić, A., Baronio, F., Hadžievski, L., Wabnitz, S.,& Maluckov, A.. (2018). Statistics of vector Manakov rogue waves. in Physical Review E, 98(1), 012209.
https://doi.org/10.1103/PhysRevE.98.012209

Mančić A, Baronio F, Hadžievski L, Wabnitz S, Maluckov A. Statistics of vector Manakov rogue waves. in Physical Review E. 2018;98(1):012209.
doi:10.1103/PhysRevE.98.012209 .

Mančić, Ana, Baronio, Fabio, Hadžievski, Ljupčo, Wabnitz, Stefan, Maluckov, Aleksandra, "Statistics of vector Manakov rogue waves" in Physical Review E, 98, no. 1 (2018):012209,
https://doi.org/10.1103/PhysRevE.98.012209 . .

TY  - CONF
AU  - Poblete, Rodrigo Andres Vicencio
AU  - Salinas, I. A.
AU  - Hermann-Avigliano, Carla
AU  - Rivas, D. A.
AU  - Real, Bastian
AU  - Mejía-Cortés, Cristian
AU  - Mančić, Ana
AU  - Maluckov, Aleksandra
PY  - 2018
UR  - https://www.osapublishing.org/abstract.cfm?URI=LAOP-2018-W2E.4
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8020
AB  - We report on the excitation of large-amplitude waves, with very low probability, in photorefractive SBN crystals. We excite the system with a narrow gaussian beam and observe different dynamical regimes tailored by the crystal nonlinearity. © 2018 The Author (s)
C3  - Latin America Optics and Photonics Conference
T1  - Rogue Waves in Photorefractive SBN Crystals
VL  - Part F123-LAOP 2018
SP  - W2E.4
DO  - 10.1364/LAOP.2018.W2E.4
ER  - 

@conference{
author = "Poblete, Rodrigo Andres Vicencio and Salinas, I. A. and Hermann-Avigliano, Carla and Rivas, D. A. and Real, Bastian and Mejía-Cortés, Cristian and Mančić, Ana and Maluckov, Aleksandra",
year = "2018",
abstract = "We report on the excitation of large-amplitude waves, with very low probability, in photorefractive SBN crystals. We excite the system with a narrow gaussian beam and observe different dynamical regimes tailored by the crystal nonlinearity. © 2018 The Author (s)",
journal = "Latin America Optics and Photonics Conference",
title = "Rogue Waves in Photorefractive SBN Crystals",
volume = "Part F123-LAOP 2018",
pages = "W2E.4",
doi = "10.1364/LAOP.2018.W2E.4"
}

Poblete, R. A. V., Salinas, I. A., Hermann-Avigliano, C., Rivas, D. A., Real, B., Mejía-Cortés, C., Mančić, A.,& Maluckov, A.. (2018). Rogue Waves in Photorefractive SBN Crystals. in Latin America Optics and Photonics Conference, Part F123-LAOP 2018, W2E.4.
https://doi.org/10.1364/LAOP.2018.W2E.4

Poblete RAV, Salinas IA, Hermann-Avigliano C, Rivas DA, Real B, Mejía-Cortés C, Mančić A, Maluckov A. Rogue Waves in Photorefractive SBN Crystals. in Latin America Optics and Photonics Conference. 2018;Part F123-LAOP 2018:W2E.4.
doi:10.1364/LAOP.2018.W2E.4 .

Poblete, Rodrigo Andres Vicencio, Salinas, I. A., Hermann-Avigliano, Carla, Rivas, D. A., Real, Bastian, Mejía-Cortés, Cristian, Mančić, Ana, Maluckov, Aleksandra, "Rogue Waves in Photorefractive SBN Crystals" in Latin America Optics and Photonics Conference, Part F123-LAOP 2018 (2018):W2E.4,
https://doi.org/10.1364/LAOP.2018.W2E.4 . .

TY  - JOUR
AU  - Mančić, Ana
AU  - Maluckov, Aleksandra
AU  - Hadžievski, Ljupčo
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1454
AB  - Extreme events (EEs) in nonlinear and/or disordered one-dimensional photonic lattice systems described by the Salerno model with on-site disorder are studied. The goal is to explain particular properties of these phenomena, essentially related to localization of light in the presence of nonlinear and/or nonlocal couplings in the considered systems. Combining statistical and nonlinear dynamical methods and measures developed in the framework of the theory of localization phenomena in disordered and nonlinear systems, particularities of EEs are qualitatively clarified. Findings presented here indicate that the best environment for EEs creation are disordered near-integrable Salerno lattices. In addition, it is been shown that the leading role in the generation and dynamical properties of EEs in the considered model is played by modulation instability, i.e., by nonlinearities in the system, although EEs can be induced in linear lattices with on-site disorder too.
T2  - Physical Review E
T1  - Influence of disorder on generation and probability of extreme events in Salerno lattices
VL  - 95
IS  - 3
DO  - 10.1103/PhysRevE.95.032212
ER  - 

@article{
author = "Mančić, Ana and Maluckov, Aleksandra and Hadžievski, Ljupčo",
year = "2017",
abstract = "Extreme events (EEs) in nonlinear and/or disordered one-dimensional photonic lattice systems described by the Salerno model with on-site disorder are studied. The goal is to explain particular properties of these phenomena, essentially related to localization of light in the presence of nonlinear and/or nonlocal couplings in the considered systems. Combining statistical and nonlinear dynamical methods and measures developed in the framework of the theory of localization phenomena in disordered and nonlinear systems, particularities of EEs are qualitatively clarified. Findings presented here indicate that the best environment for EEs creation are disordered near-integrable Salerno lattices. In addition, it is been shown that the leading role in the generation and dynamical properties of EEs in the considered model is played by modulation instability, i.e., by nonlinearities in the system, although EEs can be induced in linear lattices with on-site disorder too.",
journal = "Physical Review E",
title = "Influence of disorder on generation and probability of extreme events in Salerno lattices",
volume = "95",
number = "3",
doi = "10.1103/PhysRevE.95.032212"
}

Mančić, A., Maluckov, A.,& Hadžievski, L.. (2017). Influence of disorder on generation and probability of extreme events in Salerno lattices. in Physical Review E, 95(3).
https://doi.org/10.1103/PhysRevE.95.032212

Mančić A, Maluckov A, Hadžievski L. Influence of disorder on generation and probability of extreme events in Salerno lattices. in Physical Review E. 2017;95(3).
doi:10.1103/PhysRevE.95.032212 .

Mančić, Ana, Maluckov, Aleksandra, Hadžievski, Ljupčo, "Influence of disorder on generation and probability of extreme events in Salerno lattices" in Physical Review E, 95, no. 3 (2017),
https://doi.org/10.1103/PhysRevE.95.032212 . .

TY  - JOUR
AU  - Stojanović Krasić, Marija
AU  - Mančić, Ana
AU  - Kuzmanović, Slavica
AU  - Đorić-Veljković, Snežana M.
AU  - Stepić, Milutin
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1531
AB  - We numerically analysed various localized modes formed by light beam propagation through one-dimensional composite lattices consisting of two structurally different linear lattices and a linear defect (LD) in one of them. The localized modes are found in the area between the interface and the LD, near the interface and around the LD. It has been confirmed that a LD narrower than the other waveguides (WGs) in the array is better potential barrier and captures the light better than a LD that is wider than the other WGs in the array. Also, it has been shown that a LD narrower than the other WGs in the lattice captures the light more efficiently than any saturable nonlinear defect (ND) of the same width as other elements of the lattice. On the other hand, it is obtained that the influence of a LD wider than the other WGs in the array on light propagation can be mimicked by insertion of an adequate ND whose width coincides with that of the other WGs. Depending on the defect size, its position and input beam parameters, controllable beam trapping, reflection and refraction are observed.
T2  - Optics Communications
T1  - Linear and interface defects in composite linear photonic lattice
VL  - 394
SP  - 6
EP  - 13
DO  - 10.1016/j.optcom.2017.02.021
ER  - 

@article{
author = "Stojanović Krasić, Marija and Mančić, Ana and Kuzmanović, Slavica and Đorić-Veljković, Snežana M. and Stepić, Milutin",
year = "2017",
abstract = "We numerically analysed various localized modes formed by light beam propagation through one-dimensional composite lattices consisting of two structurally different linear lattices and a linear defect (LD) in one of them. The localized modes are found in the area between the interface and the LD, near the interface and around the LD. It has been confirmed that a LD narrower than the other waveguides (WGs) in the array is better potential barrier and captures the light better than a LD that is wider than the other WGs in the array. Also, it has been shown that a LD narrower than the other WGs in the lattice captures the light more efficiently than any saturable nonlinear defect (ND) of the same width as other elements of the lattice. On the other hand, it is obtained that the influence of a LD wider than the other WGs in the array on light propagation can be mimicked by insertion of an adequate ND whose width coincides with that of the other WGs. Depending on the defect size, its position and input beam parameters, controllable beam trapping, reflection and refraction are observed.",
journal = "Optics Communications",
title = "Linear and interface defects in composite linear photonic lattice",
volume = "394",
pages = "6-13",
doi = "10.1016/j.optcom.2017.02.021"
}

Stojanović Krasić, M., Mančić, A., Kuzmanović, S., Đorić-Veljković, S. M.,& Stepić, M.. (2017). Linear and interface defects in composite linear photonic lattice. in Optics Communications, 394, 6-13.
https://doi.org/10.1016/j.optcom.2017.02.021

Stojanović Krasić M, Mančić A, Kuzmanović S, Đorić-Veljković SM, Stepić M. Linear and interface defects in composite linear photonic lattice. in Optics Communications. 2017;394:6-13.
doi:10.1016/j.optcom.2017.02.021 .

Stojanović Krasić, Marija, Mančić, Ana, Kuzmanović, Slavica, Đorić-Veljković, Snežana M., Stepić, Milutin, "Linear and interface defects in composite linear photonic lattice" in Optics Communications, 394 (2017):6-13,
https://doi.org/10.1016/j.optcom.2017.02.021 . .

TY  - JOUR
AU  - Kuzmanović, Slavica
AU  - Stojanović Krasić, Marija
AU  - Mančić, Ana
AU  - Drljača, Branko
AU  - Stepić, Milutin
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9061
AB  - In this paper, the light beam propagation through one-dimensional photonic lattice, possessing one nonlinear defect and one linear defect, has been investigated numerically. Different dynamical regimes have been identified in terms of the distance between the two defects, position of the incident light beam, the width of linear defect, the values of nonlinearity and presence of the transverse kick. Strong localized modes on the defects, breathing and zig-zag modes in the area between defects have been observed. It has been concluded that the width of the linear defect placed next to the nonlinear one influences localization of the beam at the nonlinear waveguide. On the other hand, the nonlinear defect, regardless of the values of nonlinearity, have a small influence on the beam propagation in photonic lattice. It has been observed that the transverse kick of the initial beam leads to the distortion of localized structures. By launching the light beam towards defects, the reflection of light has been noticed. Presented results can be useful for different applications, such as blocking, filtering and routing of light beam through optical media.
T2  - The University Thought - Publication in Natural Sciences
T1  - The influence of nonlinear and linear defects on the light propagation through linear one-dimensional photonic lattice
VL  - 6
IS  - 2
SP  - 61
EP  - 66
DO  - 10.5937/univtho6-12670
ER  - 

@article{
author = "Kuzmanović, Slavica and Stojanović Krasić, Marija and Mančić, Ana and Drljača, Branko and Stepić, Milutin",
year = "2016",
abstract = "In this paper, the light beam propagation through one-dimensional photonic lattice, possessing one nonlinear defect and one linear defect, has been investigated numerically. Different dynamical regimes have been identified in terms of the distance between the two defects, position of the incident light beam, the width of linear defect, the values of nonlinearity and presence of the transverse kick. Strong localized modes on the defects, breathing and zig-zag modes in the area between defects have been observed. It has been concluded that the width of the linear defect placed next to the nonlinear one influences localization of the beam at the nonlinear waveguide. On the other hand, the nonlinear defect, regardless of the values of nonlinearity, have a small influence on the beam propagation in photonic lattice. It has been observed that the transverse kick of the initial beam leads to the distortion of localized structures. By launching the light beam towards defects, the reflection of light has been noticed. Presented results can be useful for different applications, such as blocking, filtering and routing of light beam through optical media.",
journal = "The University Thought - Publication in Natural Sciences",
title = "The influence of nonlinear and linear defects on the light propagation through linear one-dimensional photonic lattice",
volume = "6",
number = "2",
pages = "61-66",
doi = "10.5937/univtho6-12670"
}

Kuzmanović, S., Stojanović Krasić, M., Mančić, A., Drljača, B.,& Stepić, M.. (2016). The influence of nonlinear and linear defects on the light propagation through linear one-dimensional photonic lattice. in The University Thought - Publication in Natural Sciences, 6(2), 61-66.
https://doi.org/10.5937/univtho6-12670

Kuzmanović S, Stojanović Krasić M, Mančić A, Drljača B, Stepić M. The influence of nonlinear and linear defects on the light propagation through linear one-dimensional photonic lattice. in The University Thought - Publication in Natural Sciences. 2016;6(2):61-66.
doi:10.5937/univtho6-12670 .

Kuzmanović, Slavica, Stojanović Krasić, Marija, Mančić, Ana, Drljača, Branko, Stepić, Milutin, "The influence of nonlinear and linear defects on the light propagation through linear one-dimensional photonic lattice" in The University Thought - Publication in Natural Sciences, 6, no. 2 (2016):61-66,
https://doi.org/10.5937/univtho6-12670 . .

TY  - JOUR
AU  - Mančić, Ana
AU  - Hadžievski, Ljupčo
AU  - Škorić, Miloš M.
PY  - 2006
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3025
AB  - Dynamical features of one-dimensional electromagnetic solitons formed in a relativistic interaction of a linearly polarized laser light with underdense cold plasma are investigated. The relativistic Lorentz force in an intense laser light pushes electrons into longitudinal motion, generating coupled longitudinal-transverse waves. In a weakly relativistic approximation these modes are well described by the generalized nonlinear Schrodinger type of equation, with two extra nonlocal terms. Here, an original analytical solution for a moving electromagnetic soliton is derived in an implicit form. For an isolated soliton, our analysis shows that the motion downshifts the soliton eigenfrequency and decreases its amplitude. The effect of the soliton velocity on the stability is analytically predicted and checked numerically. Results show shifting of the stability region toward larger amplitudes in comparison to the standing soliton case. Rich dynamics with examples of (un)stable soliton propagation and breather creation and formation of unstable cusp-type structures is exposed numerically. (c) 2006 American Institute of Physics.
T2  - Physics of Plasmas
T1  - Dynamics of electromagnetic solitons in a relativistic plasma
VL  - 13
IS  - 5
DO  - 10.1063/1.2203606
ER  - 

@article{
author = "Mančić, Ana and Hadžievski, Ljupčo and Škorić, Miloš M.",
year = "2006",
abstract = "Dynamical features of one-dimensional electromagnetic solitons formed in a relativistic interaction of a linearly polarized laser light with underdense cold plasma are investigated. The relativistic Lorentz force in an intense laser light pushes electrons into longitudinal motion, generating coupled longitudinal-transverse waves. In a weakly relativistic approximation these modes are well described by the generalized nonlinear Schrodinger type of equation, with two extra nonlocal terms. Here, an original analytical solution for a moving electromagnetic soliton is derived in an implicit form. For an isolated soliton, our analysis shows that the motion downshifts the soliton eigenfrequency and decreases its amplitude. The effect of the soliton velocity on the stability is analytically predicted and checked numerically. Results show shifting of the stability region toward larger amplitudes in comparison to the standing soliton case. Rich dynamics with examples of (un)stable soliton propagation and breather creation and formation of unstable cusp-type structures is exposed numerically. (c) 2006 American Institute of Physics.",
journal = "Physics of Plasmas",
title = "Dynamics of electromagnetic solitons in a relativistic plasma",
volume = "13",
number = "5",
doi = "10.1063/1.2203606"
}

Mančić, A., Hadžievski, L.,& Škorić, M. M.. (2006). Dynamics of electromagnetic solitons in a relativistic plasma. in Physics of Plasmas, 13(5).
https://doi.org/10.1063/1.2203606

Mančić A, Hadžievski L, Škorić MM. Dynamics of electromagnetic solitons in a relativistic plasma. in Physics of Plasmas. 2006;13(5).
doi:10.1063/1.2203606 .

Mančić, Ana, Hadžievski, Ljupčo, Škorić, Miloš M., "Dynamics of electromagnetic solitons in a relativistic plasma" in Physics of Plasmas, 13, no. 5 (2006),
https://doi.org/10.1063/1.2203606 . .

TY  - JOUR
AU  - Mančić, Ana
AU  - Hadžievski, Ljupčo
AU  - Škorić, Miloš M.
PY  - 2006
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/6643
AB  - Moving one-dimensional electromagnetic solitons formed in a weakly relativistic laser-plasma are studied in the generalized nonlinear Schroedinger equation model. Conserved quantities and moving soliton solutions are analytically derived in a closed form. Stability Studies reveal a transition at maximum amplitude to an unstable cusp-soliton. Simulations of two interacting electromagnetic (EM) solitons show a critical dependence on the solitons amplitude, velocity and mutual phase; resulting in either elastic collisions or a break up of the soliton pair.
T2  - Journal of Plasma Physics
T1  - Interaction of electromagnetic solitons in relativistic plasmas
VL  - 72
SP  - 1309
EP  - 1313
DO  - 10.1017/S0022377806005617
ER  - 

@article{
author = "Mančić, Ana and Hadžievski, Ljupčo and Škorić, Miloš M.",
year = "2006",
abstract = "Moving one-dimensional electromagnetic solitons formed in a weakly relativistic laser-plasma are studied in the generalized nonlinear Schroedinger equation model. Conserved quantities and moving soliton solutions are analytically derived in a closed form. Stability Studies reveal a transition at maximum amplitude to an unstable cusp-soliton. Simulations of two interacting electromagnetic (EM) solitons show a critical dependence on the solitons amplitude, velocity and mutual phase; resulting in either elastic collisions or a break up of the soliton pair.",
journal = "Journal of Plasma Physics",
title = "Interaction of electromagnetic solitons in relativistic plasmas",
volume = "72",
pages = "1309-1313",
doi = "10.1017/S0022377806005617"
}

Mančić, A., Hadžievski, L.,& Škorić, M. M.. (2006). Interaction of electromagnetic solitons in relativistic plasmas. in Journal of Plasma Physics, 72, 1309-1313.
https://doi.org/10.1017/S0022377806005617

Mančić A, Hadžievski L, Škorić MM. Interaction of electromagnetic solitons in relativistic plasmas. in Journal of Plasma Physics. 2006;72:1309-1313.
doi:10.1017/S0022377806005617 .

Mančić, Ana, Hadžievski, Ljupčo, Škorić, Miloš M., "Interaction of electromagnetic solitons in relativistic plasmas" in Journal of Plasma Physics, 72 (2006):1309-1313,
https://doi.org/10.1017/S0022377806005617 . .