Abstract

We present and demonstrate a broadband and polarization-insensitive $2\times 2$ 3 dB power splitters based on silicon-bent directional couplers (DCs). The working bandwidth can be from 1520 to 1630 nm for both TE and TM polarizations, with an excess loss less than 1 dB. The total size for the fabricated device can be as small as 50 μm, and the measurement results show good agreement with the simulations.

© 2017 Optical Society of America

Broadband silicon polarization beam splitter with a high extinction ratio using a triple-bent-waveguide directional coupler

Jun Rong Ong, Thomas Y. L. Ang, Ezgi Sahin, Bryan Pawlina, G. F. R. Chen, D. T. H. Tan, Soon Thor Lim, and Ching Eng Png
Opt. Lett. 42(21) 4450-4453 (2017)

Low-loss and broadband 2 × 2 silicon thermo-optic Mach–Zehnder switch with bent directional couplers

Sitao Chen, Yaocheng Shi, Sailing He, and Daoxin Dai
Opt. Lett. 41(4) 836-839 (2016)

Ultra-broadband and low-loss 3  dB optical power splitter based on adiabatic tapered silicon waveguides

Yang Wang, Shitao Gao, Ke Wang, and Efstratios Skafidas
Opt. Lett. 41(9) 2053-2056 (2016)

Compact broadband polarization beam splitter using a symmetric directional coupler with sinusoidal bends

Fan Zhang, Han Yun, Yun Wang, Zeqin Lu, Lukas Chrostowski, and Nicolas A. F. Jaeger
Opt. Lett. 42(2) 235-238 (2017)

Ultra-compact polarization-independent 3 dB power splitter in silicon

Aoxue Zhang, Lipeng Xia, Ting Li, Chang Chang, Peiji Zhou, Xiaochuan Xu, and Yi Zou
Opt. Lett. 46(19) 5000-5003 (2021)