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
Full Article | PDF ArticleMore Like This
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)
Huiye Qiu, Jianfei Jiang, Ping Yu, Jianyi Yang, Hui Yu, and Xiaoqing Jiang
Opt. Lett. 42(19) 3912-3915 (2017)
Chenlei Li and Daoxin Dai
Opt. Lett. 42(21) 4243-4246 (2017)