基于紧凑型S弯波导模式解复用器的C+L波段偏振旋转器-分离器

C + L band polarization rotator-splitter based on a compact S-bend waveguide mode demultiplexer.

作者信息

Chen Daigao, Liu Min, Zhang Yuguang, Wang Lei, Hu Xiao, Feng Peng, Xiao Xi, Yu Shaohua

出版信息

Opt Express. 2021 Mar 29;29(7):10949-10957. doi: 10.1364/OE.412992.

PMID:33820217

Abstract

A novel high-fabrication-tolerance mode demultiplexer (MD) based on an S-bend waveguide is designed, which is used to split TE mode and TE mode, and convert the TE mode to TE mode. Based on the MD, a polarization-rotator-splitter (PRS) is demonstrated. The transmission losses of the fabricated PRS are lower than 0.5 dB and 0.6 dB for TE mode and TM mode, respectively, in the wavelength span of 1520-1630 nm. And the corresponding polarization extinction ratios are larger than 19.5 dB and 17.6 dB, respectively. This MD has the most compact size comparing with other experimentally demonstrated MDs used in PRS.

摘要

设计了一种基于S形弯曲波导的新型高制造容差模式解复用器（MD），用于分离TE模式和TM模式，并将TE模式转换为TM模式。基于该MD，演示了一种偏振旋转器分离器（PRS）。在1520 - 1630 nm波长范围内，所制造的PRS对于TE模式和TM模式的传输损耗分别低于0.5 dB和0.6 dB。并且相应的偏振消光比分别大于19.5 dB和17.6 dB。与其他用于PRS的已实验演示的MD相比，该MD具有最紧凑的尺寸。