Two-dimensional grating coupler with a low polarization dependent loss of 0.25 dB covering the C-band

被引:48
|
作者
Zou, Jinghui
Yu, Yu
Zhang, Xinliang [1 ]
机构
[1] Huazhong Univ Sci & Technol, Wuhan Natl Lab Optoelect, Wuhan 430074, Peoples R China
基金
中国国家自然科学基金;
关键词
SILICON-ON-INSULATOR; BACKSIDE METAL MIRROR; WAVE-GUIDES; EFFICIENCY; PHOTONICS; CIRCUIT; FIBERS;
D O I
10.1364/OL.41.004206
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
We design and demonstrate a two-dimensional grating coupler (2D GC) with a low polarization dependent loss (PDL) based on the silicon-on-insulator (SOI) platform. Using a grating cell consisting of five cylinders and carefully optimizing the distances between the cylinders, a maximum PDL of 0.25 dB covering the C-band is realized, which is 1.25 dB better than a conventional 2D GC with a single cylinder etching pattern fabricated on the same SOI wafer. (C) 2016 Optical Society of America
引用
收藏
页码:4206 / 4209
页数:4
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