TY  - JOUR
AU  - Beličev, Petra
AU  - Ilic, Igor
AU  - Stepić, Milutin
AU  - Hadžievski, Ljupčo
AU  - Lou, Cibo
AU  - Suntsov, Sergiy
AU  - Rueter, Christian E.
AU  - Kip, Detlef
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5648
AB  - We observe theoretically and experimentally the phenomenon of spontaneous symmetry breaking of strongly localized nonlinear optical modes at the microwatt level in a one-dimensional photonic lattice with a single coupling defect.
T2  - Physical Review A
T1  - Spontaneous symmetry breaking of gap solitons in defect-loaded uniform one-dimensional photonic lattices
VL  - 88
IS  - 2
DO  - 10.1103/PhysRevA.88.023858
ER  - 

@article{
author = "Beličev, Petra and Ilic, Igor and Stepić, Milutin and Hadžievski, Ljupčo and Lou, Cibo and Suntsov, Sergiy and Rueter, Christian E. and Kip, Detlef",
year = "2013",
abstract = "We observe theoretically and experimentally the phenomenon of spontaneous symmetry breaking of strongly localized nonlinear optical modes at the microwatt level in a one-dimensional photonic lattice with a single coupling defect.",
journal = "Physical Review A",
title = "Spontaneous symmetry breaking of gap solitons in defect-loaded uniform one-dimensional photonic lattices",
volume = "88",
number = "2",
doi = "10.1103/PhysRevA.88.023858"
}

Beličev, P., Ilic, I., Stepić, M., Hadžievski, L., Lou, C., Suntsov, S., Rueter, C. E.,& Kip, D.. (2013). Spontaneous symmetry breaking of gap solitons in defect-loaded uniform one-dimensional photonic lattices. in Physical Review A, 88(2).
https://doi.org/10.1103/PhysRevA.88.023858

Beličev P, Ilic I, Stepić M, Hadžievski L, Lou C, Suntsov S, Rueter CE, Kip D. Spontaneous symmetry breaking of gap solitons in defect-loaded uniform one-dimensional photonic lattices. in Physical Review A. 2013;88(2).
doi:10.1103/PhysRevA.88.023858 .

Beličev, Petra, Ilic, Igor, Stepić, Milutin, Hadžievski, Ljupčo, Lou, Cibo, Suntsov, Sergiy, Rueter, Christian E., Kip, Detlef, "Spontaneous symmetry breaking of gap solitons in defect-loaded uniform one-dimensional photonic lattices" in Physical Review A, 88, no. 2 (2013),
https://doi.org/10.1103/PhysRevA.88.023858 . .

TY  - JOUR
AU  - Kanshu, A.
AU  - Rueter, C. E.
AU  - Kip, D.
AU  - Shandarov, V.
AU  - Beličev, Petra
AU  - Ilic, I.
AU  - Stepić, Milutin
PY  - 2012
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/4797
AB  - We consider, both experimentally and theoretically, the existence and stability of localized, symmetric, and anti-symmetric gap solitons (GSs) in binary lattices of identical waveguides but with alternating spacings. Furthermore, the properties of surface GSs at the boundary of the lattice are explored. (C) 2012 Optical Society of America
T2  - Optics Letters
T1  - Observation of discrete gap solitons in one-dimensional waveguide arrays with alternating spacings and saturable defocusing nonlinearity
VL  - 37
IS  - 7
SP  - 1253
EP  - 1255
DO  - 10.1364/OL.37.001253
ER  - 

@article{
author = "Kanshu, A. and Rueter, C. E. and Kip, D. and Shandarov, V. and Beličev, Petra and Ilic, I. and Stepić, Milutin",
year = "2012",
abstract = "We consider, both experimentally and theoretically, the existence and stability of localized, symmetric, and anti-symmetric gap solitons (GSs) in binary lattices of identical waveguides but with alternating spacings. Furthermore, the properties of surface GSs at the boundary of the lattice are explored. (C) 2012 Optical Society of America",
journal = "Optics Letters",
title = "Observation of discrete gap solitons in one-dimensional waveguide arrays with alternating spacings and saturable defocusing nonlinearity",
volume = "37",
number = "7",
pages = "1253-1255",
doi = "10.1364/OL.37.001253"
}

Kanshu, A., Rueter, C. E., Kip, D., Shandarov, V., Beličev, P., Ilic, I.,& Stepić, M.. (2012). Observation of discrete gap solitons in one-dimensional waveguide arrays with alternating spacings and saturable defocusing nonlinearity. in Optics Letters, 37(7), 1253-1255.
https://doi.org/10.1364/OL.37.001253

Kanshu A, Rueter CE, Kip D, Shandarov V, Beličev P, Ilic I, Stepić M. Observation of discrete gap solitons in one-dimensional waveguide arrays with alternating spacings and saturable defocusing nonlinearity. in Optics Letters. 2012;37(7):1253-1255.
doi:10.1364/OL.37.001253 .

Kanshu, A., Rueter, C. E., Kip, D., Shandarov, V., Beličev, Petra, Ilic, I., Stepić, Milutin, "Observation of discrete gap solitons in one-dimensional waveguide arrays with alternating spacings and saturable defocusing nonlinearity" in Optics Letters, 37, no. 7 (2012):1253-1255,
https://doi.org/10.1364/OL.37.001253 . .

TY  - JOUR
AU  - Beličev, Petra
AU  - Ilic, Igor
AU  - Maluckov, Aleksandra
AU  - Stepić, Milutin
AU  - Kanshu, Andrey
AU  - Rueter, Christian E.
AU  - Kip, Detlef
PY  - 2012
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5048
AB  - The existence and stability of spatial solitons in one-dimensional binary photonic lattices with alternating spacing and a saturable defocusing type of nonlinearity are investigated. Five types of nonlinear localized structures are found to exist: two in the mini-gap in the energy spectrum and others in the regular gap. It is proved that some of them are stable in certain ranges of the system parameters. Interactions between two identical localized structures propagating parallel to each other are investigated, too. It is shown that this interaction leads to formation of different localized patterns, such as solitons, breather-like modes, and breather complexes. The interaction output depends on the power and type of interacting identical solitons, the separation between them, the width of the mini-gap, and the phase relation between the tails of interacting solitons.
T2  - Physical Review A
T1  - Dynamics of gap solitons in one-dimensional binary lattices with saturable self-defocusing nonlinearity and alternating spacing
VL  - 86
IS  - 3
DO  - 10.1103/PhysRevA.86.033835
ER  - 

@article{
author = "Beličev, Petra and Ilic, Igor and Maluckov, Aleksandra and Stepić, Milutin and Kanshu, Andrey and Rueter, Christian E. and Kip, Detlef",
year = "2012",
abstract = "The existence and stability of spatial solitons in one-dimensional binary photonic lattices with alternating spacing and a saturable defocusing type of nonlinearity are investigated. Five types of nonlinear localized structures are found to exist: two in the mini-gap in the energy spectrum and others in the regular gap. It is proved that some of them are stable in certain ranges of the system parameters. Interactions between two identical localized structures propagating parallel to each other are investigated, too. It is shown that this interaction leads to formation of different localized patterns, such as solitons, breather-like modes, and breather complexes. The interaction output depends on the power and type of interacting identical solitons, the separation between them, the width of the mini-gap, and the phase relation between the tails of interacting solitons.",
journal = "Physical Review A",
title = "Dynamics of gap solitons in one-dimensional binary lattices with saturable self-defocusing nonlinearity and alternating spacing",
volume = "86",
number = "3",
doi = "10.1103/PhysRevA.86.033835"
}

Beličev, P., Ilic, I., Maluckov, A., Stepić, M., Kanshu, A., Rueter, C. E.,& Kip, D.. (2012). Dynamics of gap solitons in one-dimensional binary lattices with saturable self-defocusing nonlinearity and alternating spacing. in Physical Review A, 86(3).
https://doi.org/10.1103/PhysRevA.86.033835

Beličev P, Ilic I, Maluckov A, Stepić M, Kanshu A, Rueter CE, Kip D. Dynamics of gap solitons in one-dimensional binary lattices with saturable self-defocusing nonlinearity and alternating spacing. in Physical Review A. 2012;86(3).
doi:10.1103/PhysRevA.86.033835 .

Beličev, Petra, Ilic, Igor, Maluckov, Aleksandra, Stepić, Milutin, Kanshu, Andrey, Rueter, Christian E., Kip, Detlef, "Dynamics of gap solitons in one-dimensional binary lattices with saturable self-defocusing nonlinearity and alternating spacing" in Physical Review A, 86, no. 3 (2012),
https://doi.org/10.1103/PhysRevA.86.033835 . .

TY  - JOUR
AU  - Kanshu, A.
AU  - Rueter, C. E.
AU  - Kip, D.
AU  - Beličev, Petra
AU  - Ilic, I.
AU  - Stepić, Milutin
AU  - Shandarov, V. M.
PY  - 2011
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/4193
AB  - We investigate linear and nonlinear light propagation at the interface of two one-dimensional homogeneous waveguide arrays containing a single defect of different strength. For the linear case and in a limited region of the defect size, we find trapped staggered and unstaggered modes. In the nonlinear case, we study the dependence of power thresholds for discrete soliton formation in different channels as a function of defect strength. All experimental results are confirmed theoretically using an adequate discrete model. (C) 2011 Optical Society of America
T2  - Optics Express
T1  - Linear and nonlinear light propagation at the interface of two homogeneous waveguide arrays
VL  - 19
IS  - 2
SP  - 1158
EP  - 1167
DO  - 10.1364/OE.19.001158
ER  - 

@article{
author = "Kanshu, A. and Rueter, C. E. and Kip, D. and Beličev, Petra and Ilic, I. and Stepić, Milutin and Shandarov, V. M.",
year = "2011",
abstract = "We investigate linear and nonlinear light propagation at the interface of two one-dimensional homogeneous waveguide arrays containing a single defect of different strength. For the linear case and in a limited region of the defect size, we find trapped staggered and unstaggered modes. In the nonlinear case, we study the dependence of power thresholds for discrete soliton formation in different channels as a function of defect strength. All experimental results are confirmed theoretically using an adequate discrete model. (C) 2011 Optical Society of America",
journal = "Optics Express",
title = "Linear and nonlinear light propagation at the interface of two homogeneous waveguide arrays",
volume = "19",
number = "2",
pages = "1158-1167",
doi = "10.1364/OE.19.001158"
}

Kanshu, A., Rueter, C. E., Kip, D., Beličev, P., Ilic, I., Stepić, M.,& Shandarov, V. M.. (2011). Linear and nonlinear light propagation at the interface of two homogeneous waveguide arrays. in Optics Express, 19(2), 1158-1167.
https://doi.org/10.1364/OE.19.001158

Kanshu A, Rueter CE, Kip D, Beličev P, Ilic I, Stepić M, Shandarov VM. Linear and nonlinear light propagation at the interface of two homogeneous waveguide arrays. in Optics Express. 2011;19(2):1158-1167.
doi:10.1364/OE.19.001158 .

Kanshu, A., Rueter, C. E., Kip, D., Beličev, Petra, Ilic, I., Stepić, Milutin, Shandarov, V. M., "Linear and nonlinear light propagation at the interface of two homogeneous waveguide arrays" in Optics Express, 19, no. 2 (2011):1158-1167,
https://doi.org/10.1364/OE.19.001158 . .

TY  - JOUR
AU  - Tan, Y.
AU  - Chen, F.
AU  - Beličev, Petra
AU  - Stepić, Milutin
AU  - Maluckov, Aleksandra
AU  - Rueter, C. E.
AU  - Kip, D.
PY  - 2009
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3699
AB  - Photovoltaic photorefractive binary waveguide arrays are fabricated by proton implantation and selective light illumination on top of an iron-doped near stoichiometric lithium niobate crystal. Linear discrete diffraction and nonlinear formation of gap solitons were investigated by single-channel excitation using Gaussian light beams coupled into either wide or narrow waveguide channels. The results show that, at low power, linear light propagation leads to discrete diffraction, whilst for higher input power the focusing mechanism dominates, finally leading to the formation of gap solitons in the binary waveguide arrays. Our simulation of light propagation based on a nonlinear beam propagation method confirms the experimental findings.
T2  - Applied Physics. B: Lasers and Optics
T1  - Gap solitons in defocusing lithium niobate binary waveguide arrays fabricated by proton implantation and selective light illumination
VL  - 95
IS  - 3
SP  - 531
EP  - 535
DO  - 10.1007/s00340-009-3467-2
ER  - 

@article{
author = "Tan, Y. and Chen, F. and Beličev, Petra and Stepić, Milutin and Maluckov, Aleksandra and Rueter, C. E. and Kip, D.",
year = "2009",
abstract = "Photovoltaic photorefractive binary waveguide arrays are fabricated by proton implantation and selective light illumination on top of an iron-doped near stoichiometric lithium niobate crystal. Linear discrete diffraction and nonlinear formation of gap solitons were investigated by single-channel excitation using Gaussian light beams coupled into either wide or narrow waveguide channels. The results show that, at low power, linear light propagation leads to discrete diffraction, whilst for higher input power the focusing mechanism dominates, finally leading to the formation of gap solitons in the binary waveguide arrays. Our simulation of light propagation based on a nonlinear beam propagation method confirms the experimental findings.",
journal = "Applied Physics. B: Lasers and Optics",
title = "Gap solitons in defocusing lithium niobate binary waveguide arrays fabricated by proton implantation and selective light illumination",
volume = "95",
number = "3",
pages = "531-535",
doi = "10.1007/s00340-009-3467-2"
}

Tan, Y., Chen, F., Beličev, P., Stepić, M., Maluckov, A., Rueter, C. E.,& Kip, D.. (2009). Gap solitons in defocusing lithium niobate binary waveguide arrays fabricated by proton implantation and selective light illumination. in Applied Physics. B: Lasers and Optics, 95(3), 531-535.
https://doi.org/10.1007/s00340-009-3467-2

Tan Y, Chen F, Beličev P, Stepić M, Maluckov A, Rueter CE, Kip D. Gap solitons in defocusing lithium niobate binary waveguide arrays fabricated by proton implantation and selective light illumination. in Applied Physics. B: Lasers and Optics. 2009;95(3):531-535.
doi:10.1007/s00340-009-3467-2 .

Tan, Y., Chen, F., Beličev, Petra, Stepić, Milutin, Maluckov, Aleksandra, Rueter, C. E., Kip, D., "Gap solitons in defocusing lithium niobate binary waveguide arrays fabricated by proton implantation and selective light illumination" in Applied Physics. B: Lasers and Optics, 95, no. 3 (2009):531-535,
https://doi.org/10.1007/s00340-009-3467-2 . .

TY  - JOUR
AU  - Stepić, Milutin
AU  - Maluckov, Aleksandra
AU  - Kip, D.
PY  - 2009
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3698
AB  - Light propagation in one-dimensional nonlinear waveguide arrays with self-defocusing intensity-resonant nonlinearity is investigated theoretically. We study thoroughly conditions for existence and stability of both gap and discrete dark solitons. According to the linear stability analysis both fundamental types (on-site and intersite) of gap solitons may be stable. Discrete dark solitons are unstable except in the low-power regime and, depending on system parameters, evolve into either gray solitons, breathers, or background radiation. Mobility of these solitons is analyzed by the free energy concept: gap solitons are immobile but dark solitons can be easily set in motion.
T2  - Applied Physics. B: Lasers and Optics
T1  - Gap and dark solitons in discrete photorefractive media with intensity-resonant nonlinearity
VL  - 95
IS  - 3
SP  - 525
EP  - 530
DO  - 10.1007/s00340-009-3400-8
ER  - 

@article{
author = "Stepić, Milutin and Maluckov, Aleksandra and Kip, D.",
year = "2009",
abstract = "Light propagation in one-dimensional nonlinear waveguide arrays with self-defocusing intensity-resonant nonlinearity is investigated theoretically. We study thoroughly conditions for existence and stability of both gap and discrete dark solitons. According to the linear stability analysis both fundamental types (on-site and intersite) of gap solitons may be stable. Discrete dark solitons are unstable except in the low-power regime and, depending on system parameters, evolve into either gray solitons, breathers, or background radiation. Mobility of these solitons is analyzed by the free energy concept: gap solitons are immobile but dark solitons can be easily set in motion.",
journal = "Applied Physics. B: Lasers and Optics",
title = "Gap and dark solitons in discrete photorefractive media with intensity-resonant nonlinearity",
volume = "95",
number = "3",
pages = "525-530",
doi = "10.1007/s00340-009-3400-8"
}

Stepić, M., Maluckov, A.,& Kip, D.. (2009). Gap and dark solitons in discrete photorefractive media with intensity-resonant nonlinearity. in Applied Physics. B: Lasers and Optics, 95(3), 525-530.
https://doi.org/10.1007/s00340-009-3400-8

Stepić M, Maluckov A, Kip D. Gap and dark solitons in discrete photorefractive media with intensity-resonant nonlinearity. in Applied Physics. B: Lasers and Optics. 2009;95(3):525-530.
doi:10.1007/s00340-009-3400-8 .

Stepić, Milutin, Maluckov, Aleksandra, Kip, D., "Gap and dark solitons in discrete photorefractive media with intensity-resonant nonlinearity" in Applied Physics. B: Lasers and Optics, 95, no. 3 (2009):525-530,
https://doi.org/10.1007/s00340-009-3400-8 . .

TY  - JOUR
AU  - Stepić, Milutin
AU  - Maluckov, Aleksandra
AU  - Stojanović, Marija
AU  - Chen, Feng
AU  - Kip, Detlef
PY  - 2008
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3558
AB  - We study theoretically light beam propagation in one-dimensional periodic media with intensity-resonant nonlinearity. The phenomenon of discrete modulational instability is investigated in detail as well as the conditions for the existence and stability of fundamental lattice and surface soliton modes. According to the linear stability analysis, only on-site solitons are stable. The mobility of lattice solitons is analyzed by both free energy and mapping concepts. Only broad solitons may freely traverse the lattice.
T2  - Physical Review A
T1  - Modulational instability and solitary waves in one-dimensional lattices with intensity-resonant nonlinearity
VL  - 78
IS  - 4
DO  - 10.1103/PhysRevA.78.043819
ER  - 

@article{
author = "Stepić, Milutin and Maluckov, Aleksandra and Stojanović, Marija and Chen, Feng and Kip, Detlef",
year = "2008",
abstract = "We study theoretically light beam propagation in one-dimensional periodic media with intensity-resonant nonlinearity. The phenomenon of discrete modulational instability is investigated in detail as well as the conditions for the existence and stability of fundamental lattice and surface soliton modes. According to the linear stability analysis, only on-site solitons are stable. The mobility of lattice solitons is analyzed by both free energy and mapping concepts. Only broad solitons may freely traverse the lattice.",
journal = "Physical Review A",
title = "Modulational instability and solitary waves in one-dimensional lattices with intensity-resonant nonlinearity",
volume = "78",
number = "4",
doi = "10.1103/PhysRevA.78.043819"
}

Stepić, M., Maluckov, A., Stojanović, M., Chen, F.,& Kip, D.. (2008). Modulational instability and solitary waves in one-dimensional lattices with intensity-resonant nonlinearity. in Physical Review A, 78(4).
https://doi.org/10.1103/PhysRevA.78.043819

Stepić M, Maluckov A, Stojanović M, Chen F, Kip D. Modulational instability and solitary waves in one-dimensional lattices with intensity-resonant nonlinearity. in Physical Review A. 2008;78(4).
doi:10.1103/PhysRevA.78.043819 .

Stepić, Milutin, Maluckov, Aleksandra, Stojanović, Marija, Chen, Feng, Kip, Detlef, "Modulational instability and solitary waves in one-dimensional lattices with intensity-resonant nonlinearity" in Physical Review A, 78, no. 4 (2008),
https://doi.org/10.1103/PhysRevA.78.043819 . .

TY  - JOUR
AU  - Tan, Yang
AU  - Chen, Feng
AU  - Stepić, Milutin
AU  - Shandarov, Vladimir
AU  - Kip, Detlef
PY  - 2008
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3491
AB  - We report on a new method to form reconfigurable channel waveguides in lithium niobate crystals, based on a combination of low-dose O3+ ion implantation and selective white light illumination. The fabricated structures show low loss as well as rather high resistivity against optical erasure with red or infrared light, while at the same time reconfiguration of the structures remains possible using homogeneous white light illumination. The transmission properties of the channel waveguide modes can be well simulated numerically by the beam propagation method, which allows for the fabrication of tailored optical interconnections. (c) 2008 Optical Society of America.
T2  - Optics Express
T1  - Reconfigurable optical channel waveguides in lithium niobate crystals produced by combination of low-dose O3+ ion implantation and selective white light illumination
VL  - 16
IS  - 14
SP  - 10465
EP  - 10470
DO  - 10.1364/OE.16.010465
ER  - 

@article{
author = "Tan, Yang and Chen, Feng and Stepić, Milutin and Shandarov, Vladimir and Kip, Detlef",
year = "2008",
abstract = "We report on a new method to form reconfigurable channel waveguides in lithium niobate crystals, based on a combination of low-dose O3+ ion implantation and selective white light illumination. The fabricated structures show low loss as well as rather high resistivity against optical erasure with red or infrared light, while at the same time reconfiguration of the structures remains possible using homogeneous white light illumination. The transmission properties of the channel waveguide modes can be well simulated numerically by the beam propagation method, which allows for the fabrication of tailored optical interconnections. (c) 2008 Optical Society of America.",
journal = "Optics Express",
title = "Reconfigurable optical channel waveguides in lithium niobate crystals produced by combination of low-dose O3+ ion implantation and selective white light illumination",
volume = "16",
number = "14",
pages = "10465-10470",
doi = "10.1364/OE.16.010465"
}

Tan, Y., Chen, F., Stepić, M., Shandarov, V.,& Kip, D.. (2008). Reconfigurable optical channel waveguides in lithium niobate crystals produced by combination of low-dose O3+ ion implantation and selective white light illumination. in Optics Express, 16(14), 10465-10470.
https://doi.org/10.1364/OE.16.010465

Tan Y, Chen F, Stepić M, Shandarov V, Kip D. Reconfigurable optical channel waveguides in lithium niobate crystals produced by combination of low-dose O3+ ion implantation and selective white light illumination. in Optics Express. 2008;16(14):10465-10470.
doi:10.1364/OE.16.010465 .

Tan, Yang, Chen, Feng, Stepić, Milutin, Shandarov, Vladimir, Kip, Detlef, "Reconfigurable optical channel waveguides in lithium niobate crystals produced by combination of low-dose O3+ ion implantation and selective white light illumination" in Optics Express, 16, no. 14 (2008):10465-10470,
https://doi.org/10.1364/OE.16.010465 . .

TY  - JOUR
AU  - Rüter, Christian E.
AU  - Wisniewski, Jürgen
AU  - Stepić, Milutin
AU  - Kip, Detlef
PY  - 2007
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12063
AB  - Propagation of extended Floquet-Bloch modes in the first three bands of a one-dimensional photonic lattice possessing a self-defocusing saturable nonlinearity is studied experimentally and numerically on the example of waveguide arrays in lithium niobate. Discrete modulation instability is observed in all bands in the region of anomalous diffraction, whereas modes propagate stable in the normal diffraction regime.
T2  - Optics Express
T1  - Higher-band modulational instability in photonic lattices
VL  - 15
IS  - 10
SP  - 6324
DO  - 10.1364/OE.15.006324
ER  - 

@article{
author = "Rüter, Christian E. and Wisniewski, Jürgen and Stepić, Milutin and Kip, Detlef",
year = "2007",
abstract = "Propagation of extended Floquet-Bloch modes in the first three bands of a one-dimensional photonic lattice possessing a self-defocusing saturable nonlinearity is studied experimentally and numerically on the example of waveguide arrays in lithium niobate. Discrete modulation instability is observed in all bands in the region of anomalous diffraction, whereas modes propagate stable in the normal diffraction regime.",
journal = "Optics Express",
title = "Higher-band modulational instability in photonic lattices",
volume = "15",
number = "10",
pages = "6324",
doi = "10.1364/OE.15.006324"
}

Rüter, C. E., Wisniewski, J., Stepić, M.,& Kip, D.. (2007). Higher-band modulational instability in photonic lattices. in Optics Express, 15(10), 6324.
https://doi.org/10.1364/OE.15.006324

Rüter CE, Wisniewski J, Stepić M, Kip D. Higher-band modulational instability in photonic lattices. in Optics Express. 2007;15(10):6324.
doi:10.1364/OE.15.006324 .

Rüter, Christian E., Wisniewski, Jürgen, Stepić, Milutin, Kip, Detlef, "Higher-band modulational instability in photonic lattices" in Optics Express, 15, no. 10 (2007):6324,
https://doi.org/10.1364/OE.15.006324 . .

TY  - JOUR
AU  - Smirnov, Eugene
AU  - Stepić, Milutin
AU  - Rüter, Christian E.
AU  - Shandarov, Vladimir
AU  - Kip, Detlef
PY  - 2007
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12064
AB  - We experimentally investigate the interaction of counterpropagating discrete solitons in a one-dimensional waveguide array in photorefractive lithium niobate. While for low input powers only weak interaction and formation of counterpropagating vector solitons are observed, for higher input powers a growing instability results in discrete lateral shifting of the formed discrete solitons. Numerical modeling shows the existence of three different regimes: stable propagation of vector solitons at low power, instability for intermediate power levels leading to discrete shifting of the two discrete solitons, and an irregular temporal dynamic behavior of the two beams for high input power.
T2  - Optics Letters
T1  - Interaction of counterpropagating discrete solitons in a nonlinear one-dimensional waveguide array
VL  - 32
IS  - 5
SP  - 512
EP  - 514
DO  - 10.1364/OL.32.000512
ER  - 

@article{
author = "Smirnov, Eugene and Stepić, Milutin and Rüter, Christian E. and Shandarov, Vladimir and Kip, Detlef",
year = "2007",
abstract = "We experimentally investigate the interaction of counterpropagating discrete solitons in a one-dimensional waveguide array in photorefractive lithium niobate. While for low input powers only weak interaction and formation of counterpropagating vector solitons are observed, for higher input powers a growing instability results in discrete lateral shifting of the formed discrete solitons. Numerical modeling shows the existence of three different regimes: stable propagation of vector solitons at low power, instability for intermediate power levels leading to discrete shifting of the two discrete solitons, and an irregular temporal dynamic behavior of the two beams for high input power.",
journal = "Optics Letters",
title = "Interaction of counterpropagating discrete solitons in a nonlinear one-dimensional waveguide array",
volume = "32",
number = "5",
pages = "512-514",
doi = "10.1364/OL.32.000512"
}

Smirnov, E., Stepić, M., Rüter, C. E., Shandarov, V.,& Kip, D.. (2007). Interaction of counterpropagating discrete solitons in a nonlinear one-dimensional waveguide array. in Optics Letters, 32(5), 512-514.
https://doi.org/10.1364/OL.32.000512

Smirnov E, Stepić M, Rüter CE, Shandarov V, Kip D. Interaction of counterpropagating discrete solitons in a nonlinear one-dimensional waveguide array. in Optics Letters. 2007;32(5):512-514.
doi:10.1364/OL.32.000512 .

Smirnov, Eugene, Stepić, Milutin, Rüter, Christian E., Shandarov, Vladimir, Kip, Detlef, "Interaction of counterpropagating discrete solitons in a nonlinear one-dimensional waveguide array" in Optics Letters, 32, no. 5 (2007):512-514,
https://doi.org/10.1364/OL.32.000512 . .

TY  - JOUR
AU  - Poblete, Rodrigo Andres Vicencio
AU  - Smirnov, Eugene
AU  - Rueter, Christian E.
AU  - Kip, Detlef
AU  - Stepić, Milutin
PY  - 2007
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3289
AB  - Localized vectorial modes, with equal frequencies and mutually orthogonal polarizations, are investigated both analytically and experimentally in a one-dimensional photonic lattice with defocusing saturable nonlinearity. It is shown that these modes may span over many lattice elements and that energy transfer among the two components is both phase and intensity dependent. The transverse electrically polarized mode exhibits a single-hump structure and spreads in cascades in saturation, while the transverse magnetically polarized mode exhibits splitting into a two-hump structure. Experimentally such discrete vector solitons are observed in lithium niobate lattices for both coherent and mutually incoherent excitations.
T2  - Physical Review A
T1  - Saturable discrete vector solitons in one-dimensional photonic lattices
VL  - 76
IS  - 3
DO  - 10.1103/PhysRevA.76.033816
ER  - 

@article{
author = "Poblete, Rodrigo Andres Vicencio and Smirnov, Eugene and Rueter, Christian E. and Kip, Detlef and Stepić, Milutin",
year = "2007",
abstract = "Localized vectorial modes, with equal frequencies and mutually orthogonal polarizations, are investigated both analytically and experimentally in a one-dimensional photonic lattice with defocusing saturable nonlinearity. It is shown that these modes may span over many lattice elements and that energy transfer among the two components is both phase and intensity dependent. The transverse electrically polarized mode exhibits a single-hump structure and spreads in cascades in saturation, while the transverse magnetically polarized mode exhibits splitting into a two-hump structure. Experimentally such discrete vector solitons are observed in lithium niobate lattices for both coherent and mutually incoherent excitations.",
journal = "Physical Review A",
title = "Saturable discrete vector solitons in one-dimensional photonic lattices",
volume = "76",
number = "3",
doi = "10.1103/PhysRevA.76.033816"
}

Poblete, R. A. V., Smirnov, E., Rueter, C. E., Kip, D.,& Stepić, M.. (2007). Saturable discrete vector solitons in one-dimensional photonic lattices. in Physical Review A, 76(3).
https://doi.org/10.1103/PhysRevA.76.033816

Poblete RAV, Smirnov E, Rueter CE, Kip D, Stepić M. Saturable discrete vector solitons in one-dimensional photonic lattices. in Physical Review A. 2007;76(3).
doi:10.1103/PhysRevA.76.033816 .

Poblete, Rodrigo Andres Vicencio, Smirnov, Eugene, Rueter, Christian E., Kip, Detlef, Stepić, Milutin, "Saturable discrete vector solitons in one-dimensional photonic lattices" in Physical Review A, 76, no. 3 (2007),
https://doi.org/10.1103/PhysRevA.76.033816 . .

TY  - JOUR
AU  - Stepić, Milutin
AU  - Smirnov, Eugene
AU  - Rueter, Christian E.
AU  - Kip, Detlef
AU  - Maluckov, Aleksandra
AU  - Hadžievski, Ljupčo
PY  - 2007
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3171
AB  - We demonstrate the existence of nonlinear Tamm oscillations at the interface between a substrate and a one-dimensional waveguide array with either cubic or saturable, self-focusing or self-defocusing nonlinearity. Light is trapped in the vicinity of the array boundary due to the interplay between the repulsive edge potential and Bragg reflection inside the array. In the special case when this potential is linear these oscillations reduce themselves to surface Bloch oscillations. (c) 2007 Optical Society of America.
T2  - Optics Letters
T1  - Tamm oscillations in semi-infinite nonlinear waveguide arrays
VL  - 32
IS  - 7
SP  - 823
EP  - 825
DO  - 10.1364/OL.32.000823
ER  - 

@article{
author = "Stepić, Milutin and Smirnov, Eugene and Rueter, Christian E. and Kip, Detlef and Maluckov, Aleksandra and Hadžievski, Ljupčo",
year = "2007",
abstract = "We demonstrate the existence of nonlinear Tamm oscillations at the interface between a substrate and a one-dimensional waveguide array with either cubic or saturable, self-focusing or self-defocusing nonlinearity. Light is trapped in the vicinity of the array boundary due to the interplay between the repulsive edge potential and Bragg reflection inside the array. In the special case when this potential is linear these oscillations reduce themselves to surface Bloch oscillations. (c) 2007 Optical Society of America.",
journal = "Optics Letters",
title = "Tamm oscillations in semi-infinite nonlinear waveguide arrays",
volume = "32",
number = "7",
pages = "823-825",
doi = "10.1364/OL.32.000823"
}

Stepić, M., Smirnov, E., Rueter, C. E., Kip, D., Maluckov, A.,& Hadžievski, L.. (2007). Tamm oscillations in semi-infinite nonlinear waveguide arrays. in Optics Letters, 32(7), 823-825.
https://doi.org/10.1364/OL.32.000823

Stepić M, Smirnov E, Rueter CE, Kip D, Maluckov A, Hadžievski L. Tamm oscillations in semi-infinite nonlinear waveguide arrays. in Optics Letters. 2007;32(7):823-825.
doi:10.1364/OL.32.000823 .

Stepić, Milutin, Smirnov, Eugene, Rueter, Christian E., Kip, Detlef, Maluckov, Aleksandra, Hadžievski, Ljupčo, "Tamm oscillations in semi-infinite nonlinear waveguide arrays" in Optics Letters, 32, no. 7 (2007):823-825,
https://doi.org/10.1364/OL.32.000823 . .

TY  - JOUR
AU  - Smirnov, Eugene
AU  - Rüter, Christian E.
AU  - Stepić, Milutin
AU  - Kip, Detlef
AU  - Shandarov, Vladimir
PY  - 2006
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12058
AB  - We report on the formation of dark discrete solitons in a nonlinear periodic system consisting of evanescently coupled channel waveguides in defocusing lithium niobate. Localized nonlinear dark modes displaying a phase jump in the center that is located either on-channel (mode A) or in-between channels (mode B) are formed, which is to our knowledge the first experimental observation of mode B. By numerical simulations we find that the saturable nature of the nonlinearity is responsible for the improved stability of mode B. The ability of the induced refractive index structures to guide light of a low-power probe beam is demonstrated.
T2  - Physical Review E
T1  - Formation and light guiding properties of dark solitons in one-dimensional waveguide arrays
VL  - 74
IS  - 6
SP  - 065601
DO  - 10.1103/PhysRevE.74.065601
ER  - 

@article{
author = "Smirnov, Eugene and Rüter, Christian E. and Stepić, Milutin and Kip, Detlef and Shandarov, Vladimir",
year = "2006",
abstract = "We report on the formation of dark discrete solitons in a nonlinear periodic system consisting of evanescently coupled channel waveguides in defocusing lithium niobate. Localized nonlinear dark modes displaying a phase jump in the center that is located either on-channel (mode A) or in-between channels (mode B) are formed, which is to our knowledge the first experimental observation of mode B. By numerical simulations we find that the saturable nature of the nonlinearity is responsible for the improved stability of mode B. The ability of the induced refractive index structures to guide light of a low-power probe beam is demonstrated.",
journal = "Physical Review E",
title = "Formation and light guiding properties of dark solitons in one-dimensional waveguide arrays",
volume = "74",
number = "6",
pages = "065601",
doi = "10.1103/PhysRevE.74.065601"
}

Smirnov, E., Rüter, C. E., Stepić, M., Kip, D.,& Shandarov, V.. (2006). Formation and light guiding properties of dark solitons in one-dimensional waveguide arrays. in Physical Review E, 74(6), 065601.
https://doi.org/10.1103/PhysRevE.74.065601

Smirnov E, Rüter CE, Stepić M, Kip D, Shandarov V. Formation and light guiding properties of dark solitons in one-dimensional waveguide arrays. in Physical Review E. 2006;74(6):065601.
doi:10.1103/PhysRevE.74.065601 .

Smirnov, Eugene, Rüter, Christian E., Stepić, Milutin, Kip, Detlef, Shandarov, Vladimir, "Formation and light guiding properties of dark solitons in one-dimensional waveguide arrays" in Physical Review E, 74, no. 6 (2006):065601,
https://doi.org/10.1103/PhysRevE.74.065601 . .

TY  - JOUR
AU  - Smirnov, Eugene
AU  - Stepić, Milutin
AU  - Rüter, Christian E.
AU  - Kip, Detlef
AU  - Shandarov, Vladimir
PY  - 2006
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12060
AB  - The observation of nonlinear staggered surface states at the interface between a substrate and a one-dimensional self-defocusing nonlinear waveguide array is reported. Launching of staggered input beams of different power in the first channel of the array results in formation of localized structures in different channels. Our experimental results are confirmed numerically.
T2  - Optics Letters
T1  - Observation of staggered surface solitary waves in one-dimensional waveguide arrays
VL  - 31
IS  - 15
SP  - 2338
EP  - 2340
DO  - 10.1364/OL.31.002338
ER  - 

@article{
author = "Smirnov, Eugene and Stepić, Milutin and Rüter, Christian E. and Kip, Detlef and Shandarov, Vladimir",
year = "2006",
abstract = "The observation of nonlinear staggered surface states at the interface between a substrate and a one-dimensional self-defocusing nonlinear waveguide array is reported. Launching of staggered input beams of different power in the first channel of the array results in formation of localized structures in different channels. Our experimental results are confirmed numerically.",
journal = "Optics Letters",
title = "Observation of staggered surface solitary waves in one-dimensional waveguide arrays",
volume = "31",
number = "15",
pages = "2338-2340",
doi = "10.1364/OL.31.002338"
}

Smirnov, E., Stepić, M., Rüter, C. E., Kip, D.,& Shandarov, V.. (2006). Observation of staggered surface solitary waves in one-dimensional waveguide arrays. in Optics Letters, 31(15), 2338-2340.
https://doi.org/10.1364/OL.31.002338

Smirnov E, Stepić M, Rüter CE, Kip D, Shandarov V. Observation of staggered surface solitary waves in one-dimensional waveguide arrays. in Optics Letters. 2006;31(15):2338-2340.
doi:10.1364/OL.31.002338 .

Smirnov, Eugene, Stepić, Milutin, Rüter, Christian E., Kip, Detlef, Shandarov, Vladimir, "Observation of staggered surface solitary waves in one-dimensional waveguide arrays" in Optics Letters, 31, no. 15 (2006):2338-2340,
https://doi.org/10.1364/OL.31.002338 . .

TY  - JOUR
AU  - Stepić, Milutin
AU  - Wirth, Christian
AU  - Rüter, Christian E.
AU  - Kip, Detlef
PY  - 2006
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12061
AB  - We report what we believe is the first observation of modulation instability in the anomalous-diffraction regions of a photonic lattice. The experiments were carried out in a ID waveguide array fabricated in a lithium niobate crystal displaying the photovoltaic self-defocusing nonlinearity, and our results are confirmed numerically by simulating the nonlinear beam propagation.
T2  - Optics Letters
T1  - Observation of modulational instability in discrete media with self-defocusing nonlinearity
VL  - 31
IS  - 2
SP  - 247
DO  - 10.1364/OL.31.000247
ER  - 

@article{
author = "Stepić, Milutin and Wirth, Christian and Rüter, Christian E. and Kip, Detlef",
year = "2006",
abstract = "We report what we believe is the first observation of modulation instability in the anomalous-diffraction regions of a photonic lattice. The experiments were carried out in a ID waveguide array fabricated in a lithium niobate crystal displaying the photovoltaic self-defocusing nonlinearity, and our results are confirmed numerically by simulating the nonlinear beam propagation.",
journal = "Optics Letters",
title = "Observation of modulational instability in discrete media with self-defocusing nonlinearity",
volume = "31",
number = "2",
pages = "247",
doi = "10.1364/OL.31.000247"
}

Stepić, M., Wirth, C., Rüter, C. E.,& Kip, D.. (2006). Observation of modulational instability in discrete media with self-defocusing nonlinearity. in Optics Letters, 31(2), 247.
https://doi.org/10.1364/OL.31.000247

Stepić M, Wirth C, Rüter CE, Kip D. Observation of modulational instability in discrete media with self-defocusing nonlinearity. in Optics Letters. 2006;31(2):247.
doi:10.1364/OL.31.000247 .

Stepić, Milutin, Wirth, Christian, Rüter, Christian E., Kip, Detlef, "Observation of modulational instability in discrete media with self-defocusing nonlinearity" in Optics Letters, 31, no. 2 (2006):247,
https://doi.org/10.1364/OL.31.000247 . .

TY  - JOUR
AU  - Smirnov, Eugene
AU  - Rüter, Christian E.
AU  - Stepić, Milutin
AU  - Shandarov, Vladimir
AU  - Kip, Detlef
PY  - 2006
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12062
AB  - We experimentally demonstrate the interaction of an optical probe beam with both bright and dark blocker solitons formed with low optical light power in a saturable defocusing waveguide array in photorefractive lithium niobate. A phase insensitive interaction of the beams is achieved by means of counterpropagating light waves. Partial and full reflection (blocking) of the probe beam on the positive or negative light-induced defect is obtained, respectively, in good agreement with numerical simulations.
T2  - Optics Express
T1  - Dark and bright blocker soliton interaction in defocusing waveguide arrays
VL  - 14
IS  - 23
SP  - 11248
DO  - 10.1364/OE.14.011248
ER  - 

@article{
author = "Smirnov, Eugene and Rüter, Christian E. and Stepić, Milutin and Shandarov, Vladimir and Kip, Detlef",
year = "2006",
abstract = "We experimentally demonstrate the interaction of an optical probe beam with both bright and dark blocker solitons formed with low optical light power in a saturable defocusing waveguide array in photorefractive lithium niobate. A phase insensitive interaction of the beams is achieved by means of counterpropagating light waves. Partial and full reflection (blocking) of the probe beam on the positive or negative light-induced defect is obtained, respectively, in good agreement with numerical simulations.",
journal = "Optics Express",
title = "Dark and bright blocker soliton interaction in defocusing waveguide arrays",
volume = "14",
number = "23",
pages = "11248",
doi = "10.1364/OE.14.011248"
}

Smirnov, E., Rüter, C. E., Stepić, M., Shandarov, V.,& Kip, D.. (2006). Dark and bright blocker soliton interaction in defocusing waveguide arrays. in Optics Express, 14(23), 11248.
https://doi.org/10.1364/OE.14.011248

Smirnov E, Rüter CE, Stepić M, Shandarov V, Kip D. Dark and bright blocker soliton interaction in defocusing waveguide arrays. in Optics Express. 2006;14(23):11248.
doi:10.1364/OE.14.011248 .

Smirnov, Eugene, Rüter, Christian E., Stepić, Milutin, Shandarov, Vladimir, Kip, Detlef, "Dark and bright blocker soliton interaction in defocusing waveguide arrays" in Optics Express, 14, no. 23 (2006):11248,
https://doi.org/10.1364/OE.14.011248 . .

TY  - JOUR
AU  - Smirnov, E.
AU  - Stepić, Milutin
AU  - Shandarov, V.
AU  - Kip, D.
PY  - 2006
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3089
AB  - Modulation instability and pattern formation by spatially incoherent light is investigated experimentally in a nonlinear ring cavity using a photorefractive strontium barium niobate crystal as the nonlinear medium. A step-like threshold for the onset of pattern formation is observed experimentally for the case of high optical feedback. When compared to the case without feedback, this threshold is shifted towards smaller nonlinearities and a significant increase of the modulation degree of the obtained patterns is obtained. Our measurements also show that, above threshold, the dominating spatial frequency of the patterns decreases monotonically with both increasing nonlinearity and increasing feedback.
T2  - Applied Physics. B: Lasers and Optics
T1  - Pattern formation by spatially incoherent light in a nonlinear ring cavity
VL  - 85
IS  - 1
SP  - 135
EP  - 138
DO  - 10.1007/s00340-006-2267-1
ER  - 

@article{
author = "Smirnov, E. and Stepić, Milutin and Shandarov, V. and Kip, D.",
year = "2006",
abstract = "Modulation instability and pattern formation by spatially incoherent light is investigated experimentally in a nonlinear ring cavity using a photorefractive strontium barium niobate crystal as the nonlinear medium. A step-like threshold for the onset of pattern formation is observed experimentally for the case of high optical feedback. When compared to the case without feedback, this threshold is shifted towards smaller nonlinearities and a significant increase of the modulation degree of the obtained patterns is obtained. Our measurements also show that, above threshold, the dominating spatial frequency of the patterns decreases monotonically with both increasing nonlinearity and increasing feedback.",
journal = "Applied Physics. B: Lasers and Optics",
title = "Pattern formation by spatially incoherent light in a nonlinear ring cavity",
volume = "85",
number = "1",
pages = "135-138",
doi = "10.1007/s00340-006-2267-1"
}

Smirnov, E., Stepić, M., Shandarov, V.,& Kip, D.. (2006). Pattern formation by spatially incoherent light in a nonlinear ring cavity. in Applied Physics. B: Lasers and Optics, 85(1), 135-138.
https://doi.org/10.1007/s00340-006-2267-1

Smirnov E, Stepić M, Shandarov V, Kip D. Pattern formation by spatially incoherent light in a nonlinear ring cavity. in Applied Physics. B: Lasers and Optics. 2006;85(1):135-138.
doi:10.1007/s00340-006-2267-1 .

Smirnov, E., Stepić, Milutin, Shandarov, V., Kip, D., "Pattern formation by spatially incoherent light in a nonlinear ring cavity" in Applied Physics. B: Lasers and Optics, 85, no. 1 (2006):135-138,
https://doi.org/10.1007/s00340-006-2267-1 . .

TY  - JOUR
AU  - Stepić, Milutin
AU  - Smirnov, Eugene
AU  - Rueter, Christian E.
AU  - Proenneke, Liv
AU  - Kip, Detlef
AU  - Shandarov, Vladimir
PY  - 2006
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3113
AB  - The interaction between two parallel beams in one-dimensional discrete saturable systems has been investigated using lithium niobate nonlinear waveguide arrays. When the beams are separated by one channel and in phase it is possible to observe soliton fusion at low power levels. This result is confirmed numerically. By increasing the power, solitonlike propagation of weakly coupled beams occurs. When the beams are out-of-phase the most interesting numerically obtained result is the existence of oscillations which resemble the recently discovered Tamm oscillations.
T2  - Physical Review E
T1  - Beam interactions in one-dimensional saturable waveguide arrays
VL  - 74
IS  - 4
DO  - 10.1103/PhysRevE.74.046614
ER  - 

@article{
author = "Stepić, Milutin and Smirnov, Eugene and Rueter, Christian E. and Proenneke, Liv and Kip, Detlef and Shandarov, Vladimir",
year = "2006",
abstract = "The interaction between two parallel beams in one-dimensional discrete saturable systems has been investigated using lithium niobate nonlinear waveguide arrays. When the beams are separated by one channel and in phase it is possible to observe soliton fusion at low power levels. This result is confirmed numerically. By increasing the power, solitonlike propagation of weakly coupled beams occurs. When the beams are out-of-phase the most interesting numerically obtained result is the existence of oscillations which resemble the recently discovered Tamm oscillations.",
journal = "Physical Review E",
title = "Beam interactions in one-dimensional saturable waveguide arrays",
volume = "74",
number = "4",
doi = "10.1103/PhysRevE.74.046614"
}

Stepić, M., Smirnov, E., Rueter, C. E., Proenneke, L., Kip, D.,& Shandarov, V.. (2006). Beam interactions in one-dimensional saturable waveguide arrays. in Physical Review E, 74(4).
https://doi.org/10.1103/PhysRevE.74.046614

Stepić M, Smirnov E, Rueter CE, Proenneke L, Kip D, Shandarov V. Beam interactions in one-dimensional saturable waveguide arrays. in Physical Review E. 2006;74(4).
doi:10.1103/PhysRevE.74.046614 .

Stepić, Milutin, Smirnov, Eugene, Rueter, Christian E., Proenneke, Liv, Kip, Detlef, Shandarov, Vladimir, "Beam interactions in one-dimensional saturable waveguide arrays" in Physical Review E, 74, no. 4 (2006),
https://doi.org/10.1103/PhysRevE.74.046614 . .

TY  - JOUR
AU  - Stepić, Milutin
AU  - Rueter, Christian E.
AU  - Kip, Detlef
AU  - Maluckov, Aleksandra
AU  - Hadžievski, Ljupčo
PY  - 2006
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3109
AB  - Discrete modulational instability within the first band of uniform one-dimensional waveguide arrays possessing a saturable self-defocusing nonlinearity is investigated in detail within the coupled mode approach. Explicit analytical results for both the threshold and the maximal gain of instability are compared with the corresponding data from waveguide arrays exhibiting Kerr nonlinearity. We find that saturation bounds the interval of existence of discrete modulational instability, stabilizes the frequency region of perturbations around +/-pi/2 and decreases both gain and critical spatial frequency of perturbations. (c) 2006 Elsevier B.V. All rights reserved.
T2  - Optics Communications
T1  - Modulational instability in one-dimensional saturable waveguide arrays: Comparison with Kerr nonlinearity
VL  - 267
IS  - 1
SP  - 229
EP  - 235
DO  - 10.1016/j.optcom.2006.06.019
ER  - 

@article{
author = "Stepić, Milutin and Rueter, Christian E. and Kip, Detlef and Maluckov, Aleksandra and Hadžievski, Ljupčo",
year = "2006",
abstract = "Discrete modulational instability within the first band of uniform one-dimensional waveguide arrays possessing a saturable self-defocusing nonlinearity is investigated in detail within the coupled mode approach. Explicit analytical results for both the threshold and the maximal gain of instability are compared with the corresponding data from waveguide arrays exhibiting Kerr nonlinearity. We find that saturation bounds the interval of existence of discrete modulational instability, stabilizes the frequency region of perturbations around +/-pi/2 and decreases both gain and critical spatial frequency of perturbations. (c) 2006 Elsevier B.V. All rights reserved.",
journal = "Optics Communications",
title = "Modulational instability in one-dimensional saturable waveguide arrays: Comparison with Kerr nonlinearity",
volume = "267",
number = "1",
pages = "229-235",
doi = "10.1016/j.optcom.2006.06.019"
}

Stepić, M., Rueter, C. E., Kip, D., Maluckov, A.,& Hadžievski, L.. (2006). Modulational instability in one-dimensional saturable waveguide arrays: Comparison with Kerr nonlinearity. in Optics Communications, 267(1), 229-235.
https://doi.org/10.1016/j.optcom.2006.06.019

Stepić M, Rueter CE, Kip D, Maluckov A, Hadžievski L. Modulational instability in one-dimensional saturable waveguide arrays: Comparison with Kerr nonlinearity. in Optics Communications. 2006;267(1):229-235.
doi:10.1016/j.optcom.2006.06.019 .

Stepić, Milutin, Rueter, Christian E., Kip, Detlef, Maluckov, Aleksandra, Hadžievski, Ljupčo, "Modulational instability in one-dimensional saturable waveguide arrays: Comparison with Kerr nonlinearity" in Optics Communications, 267, no. 1 (2006):229-235,
https://doi.org/10.1016/j.optcom.2006.06.019 . .

TY  - JOUR
AU  - Chen, Feng
AU  - Stepić, Milutin
AU  - Rüter, Christian E.
AU  - Runde, Daniel
AU  - Kip, Detlef
AU  - Shandarov, Vladimir
AU  - Manela, Ofer
AU  - Segev, Mordechai
PY  - 2005
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12057
AB  - We investigate, experimentally and theoretically, light propagation in one-dimensional waveguide arrays exhibiting a saturable self-defocusing nonlinearity. We demonstrate low-intensity “discrete diffraction”, and the high-intensity formation of spatial gap solitons arising from the first band of the transmission spectrum. The waveguide arrays are fabricated by titanium in-diffusion in a photorefractive copper-doped lithium niobate crystal, and the optical nonlinearity arises from the bulk photovoltaic effect.
T2  - Optics Express
T1  - Discrete diffraction and spatial gap solitons in photovoltaic LiNbO3 waveguide arrays
VL  - 13
IS  - 11
SP  - 4314
EP  - 4324
DO  - 10.1364/OPEX.13.004314
ER  - 

@article{
author = "Chen, Feng and Stepić, Milutin and Rüter, Christian E. and Runde, Daniel and Kip, Detlef and Shandarov, Vladimir and Manela, Ofer and Segev, Mordechai",
year = "2005",
abstract = "We investigate, experimentally and theoretically, light propagation in one-dimensional waveguide arrays exhibiting a saturable self-defocusing nonlinearity. We demonstrate low-intensity “discrete diffraction”, and the high-intensity formation of spatial gap solitons arising from the first band of the transmission spectrum. The waveguide arrays are fabricated by titanium in-diffusion in a photorefractive copper-doped lithium niobate crystal, and the optical nonlinearity arises from the bulk photovoltaic effect.",
journal = "Optics Express",
title = "Discrete diffraction and spatial gap solitons in photovoltaic LiNbO3 waveguide arrays",
volume = "13",
number = "11",
pages = "4314-4324",
doi = "10.1364/OPEX.13.004314"
}

Chen, F., Stepić, M., Rüter, C. E., Runde, D., Kip, D., Shandarov, V., Manela, O.,& Segev, M.. (2005). Discrete diffraction and spatial gap solitons in photovoltaic LiNbO3 waveguide arrays. in Optics Express, 13(11), 4314-4324.
https://doi.org/10.1364/OPEX.13.004314

Chen F, Stepić M, Rüter CE, Runde D, Kip D, Shandarov V, Manela O, Segev M. Discrete diffraction and spatial gap solitons in photovoltaic LiNbO3 waveguide arrays. in Optics Express. 2005;13(11):4314-4324.
doi:10.1364/OPEX.13.004314 .

Chen, Feng, Stepić, Milutin, Rüter, Christian E., Runde, Daniel, Kip, Detlef, Shandarov, Vladimir, Manela, Ofer, Segev, Mordechai, "Discrete diffraction and spatial gap solitons in photovoltaic LiNbO3 waveguide arrays" in Optics Express, 13, no. 11 (2005):4314-4324,
https://doi.org/10.1364/OPEX.13.004314 . .

TY  - JOUR
AU  - Maluckov, Aleksandra
AU  - Stepić, Milutin
AU  - Kip, D
AU  - Hadžievski, Ljupčo
PY  - 2005
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/2932
AB  - Theoretical results on spatial optical bright solitons excited in arrays of nonlinear defocusing waveguides, that result from the photovoltaic effect in a photorefractive material, are presented. The existence of four types of stationary discrete bright staggered solitons, on-site, inter-site, twisted inter-site, and twisted on-site solitons, is shown both analytically and numerically, and their stability properties are investigated. The maximum Hamiltonian of staggered solitons with the same total power corresponds to stable modes. It is shown that for low total power the on-site mode is stable while in the high power regime the inter-site mode is stable. These results are confirmed numerically. In addition, steering properties of localized modes are investigated by introducing a transversal translational shift. Because of the translational symmetry between on-site and inter-site localized modes they are considered as two dynamical realizations of the same moving mode, and the formalism of the Peierls-Nabarro effective potential is applied to interpret the exchange between trapping and steering of these modes. This critically depends on the modes total power and the introduced phase difference. On the other hand, steering of twisted inter-site and on-site localized modes is not numerically observed. Instead, transversal perturbation leads to a transformation of twisted modes either into a trapped on-site mode of smaller power and radiation, or into two trapped on-site modes.
T2  - European Physical Journal B. Condensed Matter and Complex Systems
T1  - Dynamics of bright discrete staggered solitons in photovoltaic photorefractive media
VL  - 45
IS  - 4
SP  - 539
EP  - 546
DO  - 10.1140/epjb/e2005-00220-6
ER  - 

@article{
author = "Maluckov, Aleksandra and Stepić, Milutin and Kip, D and Hadžievski, Ljupčo",
year = "2005",
abstract = "Theoretical results on spatial optical bright solitons excited in arrays of nonlinear defocusing waveguides, that result from the photovoltaic effect in a photorefractive material, are presented. The existence of four types of stationary discrete bright staggered solitons, on-site, inter-site, twisted inter-site, and twisted on-site solitons, is shown both analytically and numerically, and their stability properties are investigated. The maximum Hamiltonian of staggered solitons with the same total power corresponds to stable modes. It is shown that for low total power the on-site mode is stable while in the high power regime the inter-site mode is stable. These results are confirmed numerically. In addition, steering properties of localized modes are investigated by introducing a transversal translational shift. Because of the translational symmetry between on-site and inter-site localized modes they are considered as two dynamical realizations of the same moving mode, and the formalism of the Peierls-Nabarro effective potential is applied to interpret the exchange between trapping and steering of these modes. This critically depends on the modes total power and the introduced phase difference. On the other hand, steering of twisted inter-site and on-site localized modes is not numerically observed. Instead, transversal perturbation leads to a transformation of twisted modes either into a trapped on-site mode of smaller power and radiation, or into two trapped on-site modes.",
journal = "European Physical Journal B. Condensed Matter and Complex Systems",
title = "Dynamics of bright discrete staggered solitons in photovoltaic photorefractive media",
volume = "45",
number = "4",
pages = "539-546",
doi = "10.1140/epjb/e2005-00220-6"
}

Maluckov, A., Stepić, M., Kip, D.,& Hadžievski, L.. (2005). Dynamics of bright discrete staggered solitons in photovoltaic photorefractive media. in European Physical Journal B. Condensed Matter and Complex Systems, 45(4), 539-546.
https://doi.org/10.1140/epjb/e2005-00220-6

Maluckov A, Stepić M, Kip D, Hadžievski L. Dynamics of bright discrete staggered solitons in photovoltaic photorefractive media. in European Physical Journal B. Condensed Matter and Complex Systems. 2005;45(4):539-546.
doi:10.1140/epjb/e2005-00220-6 .

Maluckov, Aleksandra, Stepić, Milutin, Kip, D, Hadžievski, Ljupčo, "Dynamics of bright discrete staggered solitons in photovoltaic photorefractive media" in European Physical Journal B. Condensed Matter and Complex Systems, 45, no. 4 (2005):539-546,
https://doi.org/10.1140/epjb/e2005-00220-6 . .

TY  - JOUR
AU  - Hadžievski, Ljupčo
AU  - Maluckov, Aleksandra
AU  - Stepić, Milutin
AU  - Kip, D
PY  - 2004
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/2784
AB  - Dynamical properties of discrete solitons in nonlinear Schrodinger lattices with saturable nonlinearity are studied in the framework of the one-dimensional discrete Vinetskii-Kukhtarev model. Two stationary strongly localized modes, centered on site (A) and between two neighboring sites (B), are obtained. The associated Peierls-Nabarro potential is bounded and has multiple zeros indicating strong implications on the stability and dynamics of the localized modes. Besides a stable propagation of mode A, a stable propagation of mode B is also possible. The enhanced ability of the large power solitons to move across the lattice is pointed out and numerically verified.
T2  - Physical Review Letters
T1  - Power controlled soliton stability and steering in lattices with saturable nonlinearity
VL  - 93
IS  - 3
DO  - 10.1103/PhysRevLett.93.033901
ER  - 

@article{
author = "Hadžievski, Ljupčo and Maluckov, Aleksandra and Stepić, Milutin and Kip, D",
year = "2004",
abstract = "Dynamical properties of discrete solitons in nonlinear Schrodinger lattices with saturable nonlinearity are studied in the framework of the one-dimensional discrete Vinetskii-Kukhtarev model. Two stationary strongly localized modes, centered on site (A) and between two neighboring sites (B), are obtained. The associated Peierls-Nabarro potential is bounded and has multiple zeros indicating strong implications on the stability and dynamics of the localized modes. Besides a stable propagation of mode A, a stable propagation of mode B is also possible. The enhanced ability of the large power solitons to move across the lattice is pointed out and numerically verified.",
journal = "Physical Review Letters",
title = "Power controlled soliton stability and steering in lattices with saturable nonlinearity",
volume = "93",
number = "3",
doi = "10.1103/PhysRevLett.93.033901"
}

Hadžievski, L., Maluckov, A., Stepić, M.,& Kip, D.. (2004). Power controlled soliton stability and steering in lattices with saturable nonlinearity. in Physical Review Letters, 93(3).
https://doi.org/10.1103/PhysRevLett.93.033901

Hadžievski L, Maluckov A, Stepić M, Kip D. Power controlled soliton stability and steering in lattices with saturable nonlinearity. in Physical Review Letters. 2004;93(3).
doi:10.1103/PhysRevLett.93.033901 .

Hadžievski, Ljupčo, Maluckov, Aleksandra, Stepić, Milutin, Kip, D, "Power controlled soliton stability and steering in lattices with saturable nonlinearity" in Physical Review Letters, 93, no. 3 (2004),
https://doi.org/10.1103/PhysRevLett.93.033901 . .

TY  - JOUR
AU  - Stepić, Milutin
AU  - Maluckov, Aleksandra
AU  - Hadžievski, Ljupčo
AU  - Chen, F
AU  - Runde, D
AU  - Kip, D
PY  - 2004
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/2826
AB  - The influence of long-range interactions on the stability of stationary solutions of triangular lattices described by the continuum-discrete nonlinear Schrodinger equation is analyzed. By virtue of the linear stability analysis and a variational approach we demonstrate that both soliton array and continuous-wave solutions are modulationally unstable. Analytical expressions for instability thresholds and growth rate spectra are presented and compared with the corresponding results in the approximation of a nearest neighbor interaction.
T2  - European Physical Journal B. Condensed Matter and Complex Systems
T1  - Modulational instability on triangular dynamical lattices with long-range interactions and dispersion
VL  - 41
IS  - 4
SP  - 495
EP  - 501
DO  - 10.1140/epjb/e2004-00343-2
ER  - 

@article{
author = "Stepić, Milutin and Maluckov, Aleksandra and Hadžievski, Ljupčo and Chen, F and Runde, D and Kip, D",
year = "2004",
abstract = "The influence of long-range interactions on the stability of stationary solutions of triangular lattices described by the continuum-discrete nonlinear Schrodinger equation is analyzed. By virtue of the linear stability analysis and a variational approach we demonstrate that both soliton array and continuous-wave solutions are modulationally unstable. Analytical expressions for instability thresholds and growth rate spectra are presented and compared with the corresponding results in the approximation of a nearest neighbor interaction.",
journal = "European Physical Journal B. Condensed Matter and Complex Systems",
title = "Modulational instability on triangular dynamical lattices with long-range interactions and dispersion",
volume = "41",
number = "4",
pages = "495-501",
doi = "10.1140/epjb/e2004-00343-2"
}

Stepić, M., Maluckov, A., Hadžievski, L., Chen, F., Runde, D.,& Kip, D.. (2004). Modulational instability on triangular dynamical lattices with long-range interactions and dispersion. in European Physical Journal B. Condensed Matter and Complex Systems, 41(4), 495-501.
https://doi.org/10.1140/epjb/e2004-00343-2

Stepić M, Maluckov A, Hadžievski L, Chen F, Runde D, Kip D. Modulational instability on triangular dynamical lattices with long-range interactions and dispersion. in European Physical Journal B. Condensed Matter and Complex Systems. 2004;41(4):495-501.
doi:10.1140/epjb/e2004-00343-2 .

Stepić, Milutin, Maluckov, Aleksandra, Hadžievski, Ljupčo, Chen, F, Runde, D, Kip, D, "Modulational instability on triangular dynamical lattices with long-range interactions and dispersion" in European Physical Journal B. Condensed Matter and Complex Systems, 41, no. 4 (2004):495-501,
https://doi.org/10.1140/epjb/e2004-00343-2 . .

TY  - JOUR
AU  - Stepić, Milutin
AU  - Kip, D
AU  - Hadžievski, Ljupčo
AU  - Maluckov, Aleksandra
PY  - 2004
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/2782
AB  - A problem of pulse propagation in a homogeneous nonlinear waveguide array with saturable nonlinearity is studied. The corresponding model equation is the discretized Vinetskii-Kukhtarev equation with neglected influence of diffusion of charge carriers. For periodic boundary conditions, exact homogeneous and oscillating stationary solutions are found. A wide instability region of the homogeneous, array-independent solution is identified. An approximate analytical solution for the bright one-dimensional discrete soliton where the energy is concentrated mainly in a few waveguides is obtained. The soliton stability is investigated both analytically and numerically and a cascade nature of the saturation mechanism is revealed.
T2  - Physical Review E
T1  - One-dimensional bright discrete solitons in media with saturable nonlinearity
VL  - 69
IS  - 6
DO  - 10.1103/PhysRevE.69.066618
ER  - 

@article{
author = "Stepić, Milutin and Kip, D and Hadžievski, Ljupčo and Maluckov, Aleksandra",
year = "2004",
abstract = "A problem of pulse propagation in a homogeneous nonlinear waveguide array with saturable nonlinearity is studied. The corresponding model equation is the discretized Vinetskii-Kukhtarev equation with neglected influence of diffusion of charge carriers. For periodic boundary conditions, exact homogeneous and oscillating stationary solutions are found. A wide instability region of the homogeneous, array-independent solution is identified. An approximate analytical solution for the bright one-dimensional discrete soliton where the energy is concentrated mainly in a few waveguides is obtained. The soliton stability is investigated both analytically and numerically and a cascade nature of the saturation mechanism is revealed.",
journal = "Physical Review E",
title = "One-dimensional bright discrete solitons in media with saturable nonlinearity",
volume = "69",
number = "6",
doi = "10.1103/PhysRevE.69.066618"
}

Stepić, M., Kip, D., Hadžievski, L.,& Maluckov, A.. (2004). One-dimensional bright discrete solitons in media with saturable nonlinearity. in Physical Review E, 69(6).
https://doi.org/10.1103/PhysRevE.69.066618

Stepić M, Kip D, Hadžievski L, Maluckov A. One-dimensional bright discrete solitons in media with saturable nonlinearity. in Physical Review E. 2004;69(6).
doi:10.1103/PhysRevE.69.066618 .

Stepić, Milutin, Kip, D, Hadžievski, Ljupčo, Maluckov, Aleksandra, "One-dimensional bright discrete solitons in media with saturable nonlinearity" in Physical Review E, 69, no. 6 (2004),
https://doi.org/10.1103/PhysRevE.69.066618 . .