High-extinction-ratio silicon polarization beam splitter with tolerance to waveguide width and coupling length variations
High-extinction-ratio silicon polarization beam splitter with tolerance to waveguide width and coupling length variations
复制标题
高消光比硅偏振分束器，可耐受波导宽度和耦合长度变化
DOI：
10.1364/oe.24.006586
复制
发表时间：
2016-03-21
期刊：
影响因子：
3.8
通讯作者：
Su, Yikai
中科院分区：
文献类型：
--
作者：
Zhang, Yong;He, Yu;Su, Yikai
我们展示了一种基于光栅辅助反向耦合器 (GACC) 的紧凑型硅偏振分束器 (PBS)。两种偏振均可实现超过 30 dB 的消光比和小于 1 dB 的插入损耗。所提出的 PBS 表现出宽度变化的容限，并且当宽度变化从 + 10 nm 调整到 -10 nm 时，两种偏振的偏振消光比保持高于 20 dB。受益于GACC的增强耦合，当耦合长度从30.96μm变化到13.76μm时，两种偏振的偏振消光比可以保持高于15dB，插入损耗低于2dB。 (C) 2016年美国光学学会
We demonstrate a compact silicon polarization beam splitter (PBS) based on grating-assisted contradirectional couplers (GACCs). Over 30-dB extinction ratios and less than 1-dB insertion losses are achieved for both polarizations. The proposed PBS exhibits tolerance in width variation, and the polarization extinction ratios remain higher than 20 dB for both polarizations when the width variation is adjusted from + 10 to -10 nm. Benefiting from the enhanced coupling by the GACCs, the polarization extinction ratio can be kept higher than 15 dB and the insertion loss is lower than 2 dB for both polarizations when the coupling length varies from 30.96 to 13.76 mu m. (C) 2016 Optical Society of America