Abstract

We design and demonstrate a compact broadband polarization beam splitter (PBS) using a symmetric directional coupler with sinusoidal bends on a silicon-on-insulator platform. The sinusoidal bends in our PBS suppress the power exchange between two parallel symmetric strip waveguides for the transverse-electric (TE) mode, while allowing for the maximum power transfer to the adjacent waveguide for the transverse-magnetic (TM) mode. Our PBS has a nominal coupler length of 8.55 μm, and it has an average extinction ratio (ER) of 12.0 dB for the TE mode, an average ER of 20.1 dB for the TM mode, an average polarization isolation (PI) of 20.6 dB for the through port, and an average PI of 11.5 dB for the cross port, all over a bandwidth of 100 nm.

© 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)

Broad bandwidth and large fabrication tolerance polarization beam splitter based on multimode anti-symmetric Bragg sidewall gratings

Huiye Qiu, Jianfei Jiang, Ping Yu, Jianyi Yang, Hui Yu, and Xiaoqing Jiang
Opt. Lett. 42(19) 3912-3915 (2017)

Compact polarization beam splitter for silicon photonic integrated circuits with a 340-nm-thick silicon core layer

Chenlei Li and Daoxin Dai
Opt. Lett. 42(21) 4243-4246 (2017)

Ultra-compact polarization beam splitter utilizing a graphene-based asymmetrical directional coupler

Tian Zhang, Xiang Yin, Lin Chen, and Xun Li
Opt. Lett. 41(2) 356-359 (2016)

Compact and high extinction ratio polarization beam splitter using subwavelength grating couplers

Yin Xu and Jinbiao Xiao
Opt. Lett. 41(4) 773-776 (2016)