TY  - CONF
AU  - Bugarski, Kolja
AU  - Vildoso, P.
AU  - Stojanović, Mirjana G.
AU  - Maluckov, Aleksandra
AU  - Mashanovich, G. Z.
AU  - Vicencio, R. A.
AU  - Petrović, J.
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11813
AB  - Conventional designs of multiport splitters rely on concatenation of directional couplers or multimode interference [1,2]. However, the splitters show a considerable insertion loss and fast bandwidth drop with the number of ports. Inverse nanodesigns enable broad-bandwidth semiconductor splitters, however, at high fabrication and design costs [3,4]. In this work, we present fast and low-cost inverse designs of multiport splitters with near-zero insertion loss and respectable bandwidth. Designs are based on adjustments of the separations or lengths of waveguides composing a linearly coupled waveguide array. By tailoring the separations to achieve self-imaging of the input light pattern, a series of 1×N splitters can be achieved prior to the revival [5,6]. To demonstrate the technique, the power splitters were fabricated in a borosilicate wafer by femtosecond laser writing method [7]. The splitters show zero insertion loss within the experimental error, bandwidth of 20−60 nm around a wavelength of 640 nm and low imbalance < 0.5 dB [8]. Their footprint scales exponentially with the waveguide separation, which can be reduced to the limit of mode confinement. The footprint reduction is particularly pronounced in waveguides with high refractive index contrast, such as those in SOI, where we design the splitters with the footprint as small as 6 μm2. The proposed splitters offer new possibilities for path-entanglement generation, multipath interferometry on chip and spatial mode multiplexing.
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  - Multiport splitters based on waveguide arrays
SP  - 101
EP  - 101
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11813
ER  - 

@conference{
author = "Bugarski, Kolja and Vildoso, P. and Stojanović, Mirjana G. and Maluckov, Aleksandra and Mashanovich, G. Z. and Vicencio, R. A. and Petrović, J.",
year = "2023",
abstract = "Conventional designs of multiport splitters rely on concatenation of directional couplers or multimode interference [1,2]. However, the splitters show a considerable insertion loss and fast bandwidth drop with the number of ports. Inverse nanodesigns enable broad-bandwidth semiconductor splitters, however, at high fabrication and design costs [3,4]. In this work, we present fast and low-cost inverse designs of multiport splitters with near-zero insertion loss and respectable bandwidth. Designs are based on adjustments of the separations or lengths of waveguides composing a linearly coupled waveguide array. By tailoring the separations to achieve self-imaging of the input light pattern, a series of 1×N splitters can be achieved prior to the revival [5,6]. To demonstrate the technique, the power splitters were fabricated in a borosilicate wafer by femtosecond laser writing method [7]. The splitters show zero insertion loss within the experimental error, bandwidth of 20−60 nm around a wavelength of 640 nm and low imbalance < 0.5 dB [8]. Their footprint scales exponentially with the waveguide separation, which can be reduced to the limit of mode confinement. The footprint reduction is particularly pronounced in waveguides with high refractive index contrast, such as those in SOI, where we design the splitters with the footprint as small as 6 μm2. The proposed splitters offer new possibilities for path-entanglement generation, multipath interferometry on chip and spatial mode multiplexing.",
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 = "Multiport splitters based on waveguide arrays",
pages = "101-101",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11813"
}

Bugarski, K., Vildoso, P., Stojanović, M. G., Maluckov, A., Mashanovich, G. Z., Vicencio, R. A.,& Petrović, J.. (2023). Multiport splitters based on waveguide arrays. in PHOTONICA2023 : 9th International School and Conference on Photonics : book of abstracts; August 28 - September 1, 2023; Belgrade
Belgrade : Vinča Institute of Nuclear Sciences., 101-101.
https://hdl.handle.net/21.15107/rcub_vinar_11813

Bugarski K, Vildoso P, Stojanović MG, Maluckov A, Mashanovich GZ, Vicencio RA, Petrović J. Multiport splitters based on waveguide arrays. in PHOTONICA2023 : 9th International School and Conference on Photonics : book of abstracts; August 28 - September 1, 2023; Belgrade. 2023;:101-101.
https://hdl.handle.net/21.15107/rcub_vinar_11813 .

Bugarski, Kolja, Vildoso, P., Stojanović, Mirjana G., Maluckov, Aleksandra, Mashanovich, G. Z., Vicencio, R. A., Petrović, J., "Multiport splitters based on waveguide arrays" in PHOTONICA2023 : 9th International School and Conference on Photonics : book of abstracts; August 28 - September 1, 2023; Belgrade (2023):101-101,
https://hdl.handle.net/21.15107/rcub_vinar_11813 .

TY  - CONF
AU  - Stojanović, Mirjana G.
AU  - Stojanović Krasić, Marija
AU  - Johansson, M.
AU  - Salinas, I.A.
AU  - Vicencio, R.A.
AU  - Stepić, Milutin
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11850
AB  - Flat-band (FB) photonic lattices are attracting substantial attention of researchers
since they provide an excellent platform for studying various fundamental physical
phenomena difficult to achieve in the condensed matter systems. In that regard,
some of those phenomena demonstrated in the last two decade are discrete solitons,
dynamical localization and Anderson localization in disordered lattices [1]. One of
the advantages of photonic lattices is that they are easy to manipulate with. Maybe
the most important property of FBs is that they can host a complete set of compact
localized states (CLS), highly robust to environmental noise.
Here, we investigate the CLS in two-dimensional (2D) dice lattice dressed by artificial flux in the presence of nonlinearity. Due to the Aharonov-Bohm (AB) caging
effect, this lattice can host a fully FB spectrum [2]. The FB eigenmodes are compact
snowflake-like structures shared by a few unit cells [3]. The goal is to find suitable
conditions for selecting the localized states with user-friendly characteristics. We
do this by testing the dynamics of those snowflake-like CLS in the linear and nonlinear regime. We have found two types of dynamics of compact structures, one,
the snowflake-like, robust in both linear and nonlinear regime, and the other one,
breathing complexes, robust only in the presence of weak nonlinearity
C3  - BPU11 : 11th International Conference of the Balkan Physical Union
T1  - Compact localized modes in Dice lattice dressed by artificial flux
VL  - 427
SP  - 146
EP  - 146
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11850
ER  - 

@conference{
author = "Stojanović, Mirjana G. and Stojanović Krasić, Marija and Johansson, M. and Salinas, I.A. and Vicencio, R.A. and Stepić, Milutin",
year = "2022",
abstract = "Flat-band (FB) photonic lattices are attracting substantial attention of researchers
since they provide an excellent platform for studying various fundamental physical
phenomena difficult to achieve in the condensed matter systems. In that regard,
some of those phenomena demonstrated in the last two decade are discrete solitons,
dynamical localization and Anderson localization in disordered lattices [1]. One of
the advantages of photonic lattices is that they are easy to manipulate with. Maybe
the most important property of FBs is that they can host a complete set of compact
localized states (CLS), highly robust to environmental noise.
Here, we investigate the CLS in two-dimensional (2D) dice lattice dressed by artificial flux in the presence of nonlinearity. Due to the Aharonov-Bohm (AB) caging
effect, this lattice can host a fully FB spectrum [2]. The FB eigenmodes are compact
snowflake-like structures shared by a few unit cells [3]. The goal is to find suitable
conditions for selecting the localized states with user-friendly characteristics. We
do this by testing the dynamics of those snowflake-like CLS in the linear and nonlinear regime. We have found two types of dynamics of compact structures, one,
the snowflake-like, robust in both linear and nonlinear regime, and the other one,
breathing complexes, robust only in the presence of weak nonlinearity",
journal = "BPU11 : 11th International Conference of the Balkan Physical Union",
title = "Compact localized modes in Dice lattice dressed by artificial flux",
volume = "427",
pages = "146-146",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11850"
}

Stojanović, M. G., Stojanović Krasić, M., Johansson, M., Salinas, I.A., Vicencio, R.A.,& Stepić, M.. (2022). Compact localized modes in Dice lattice dressed by artificial flux. in BPU11 : 11th International Conference of the Balkan Physical Union, 427, 146-146.
https://hdl.handle.net/21.15107/rcub_vinar_11850

Stojanović MG, Stojanović Krasić M, Johansson M, Salinas I, Vicencio R, Stepić M. Compact localized modes in Dice lattice dressed by artificial flux. in BPU11 : 11th International Conference of the Balkan Physical Union. 2022;427:146-146.
https://hdl.handle.net/21.15107/rcub_vinar_11850 .

Stojanović, Mirjana G., Stojanović Krasić, Marija, Johansson, M., Salinas, I.A., Vicencio, R.A., Stepić, Milutin, "Compact localized modes in Dice lattice dressed by artificial flux" in BPU11 : 11th International Conference of the Balkan Physical Union, 427 (2022):146-146,
https://hdl.handle.net/21.15107/rcub_vinar_11850 .