Compact broadband (O, E, S, C, L & U bands) silicon TE-pass polarizer based on ridge waveguide adiabatic S-bends

0556139 - FZÚ 2023 RIV US eng J - Journal Article
Zafar, H. - Zhai, Y. - Villegas, J.E. - Ravaux, F. - Kennedy, K.L. - Pereira, Mauro Fernandes - Rasras, M. - Shamim, A. - Anjum, D.H.
Compact broadband (O, E, S, C, L & U bands) silicon TE-pass polarizer based on ridge waveguide adiabatic S-bends.
Optics Express. Roč. 30, č. 6 (2022), s. 10087-10095. ISSN 1094-4087
EU Projects: European Commission(XE) 832876 - aqua3S
Institutional support: RVO:68378271
Keywords : compact broadband silicon TE-pass polarizer
OECD category: Condensed matter physics (including formerly solid state physics, supercond.)
Impact factor: 3.8, year: 2022
Method of publishing: Open access

A compact, ultra-broadband and high-performance silicon TE-pass polarizer is proposed and demonstrated experimentally. It is based on partially-etched (ridge) waveguide adiabatic S-bends, input/output tapers and side gratings on a silicon-on-insulator (SOI) platform. A compact footprint and weak back reflections are obtained due to the bent waveguide and the tapers, respectively. An extremely high extinction ratio is achieved by scattering the undesired light in the slab section using the side gratings. The 3D FDTD simulations show a TE loss less than 0.3 dB and an extinction ratio greater than 30 dB over a 500 nm wavelength range (1200 nm to 1700 nm).

Permanent Link: https://hdl.handle.net/11104/0339421