Abstract
We present a low-loss and small-footprint polarization rotator based on mode evolution. The polarization rotator is composed of an asymmetric-rib waveguide and a tapered waveguide, both of which consist only of a silicon core and a silica cladding. The rotator is fabricated under the same design rules as other device blocks, such as rib-waveguide phase shifters for photonic integration. The polarization rotator is fabricated using CMOS-based processes and provides polarization rotations with an on-chip insertion loss lower than 0.5 dB from transverse-electric (TE) to transverse-magnetic (TM) polarization and a loss lower than 1.0 dB from the TM to TE polarization in a 200 nm wavelength range extending over C and L bands.
© 2015 Optical Society of America
Full Article | PDF ArticleMore Like This
Daigao Chen, Xi Xiao, Lei Wang, Wen Liu, Qi Yang, and Shaohua Yu
Opt. Lett. 41(5) 1070-1073 (2016)
X. Sun, M. Z. Alam, J. S. Aitchison, and M. Mojahedi
Opt. Lett. 41(14) 3229-3232 (2016)
Han Yun, Zhitian Chen, Yun Wang, Jonas Fluekiger, Michael Caverley, Lukas Chrostowski, and Nicolas A. F. Jaeger
Opt. Lett. 40(23) 5578-5581 (2015)