Ultra-compact and fabrication-tolerant polarization rotator based on a bend asymmetric-slab waveguide

被引：20

作者：

Cao, Tongtong ^{[1
]}

Chen, Shaowu ^{[1
]}

Fei, Yonghao ^{[1
]}

Zhang, Libin ^{[1
]}

Xu, Qing-Yang ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Semicond, State Key Lab Optoelect, Beijing 100083, Peoples R China

来源：

APPLIED OPTICS | 2013年 / 52卷 / 05期

基金：

中国国家自然科学基金;

关键词：

CONVERTER;

D O I：

10.1364/AO.52.000990

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We propose and analyze a polarization rotator based on a bend asymmetric-slab waveguide on the silicon-on-insulator platform. The device can be fabricated using standard complementary metal-oxide-semiconductor process involving only two dry etching steps. Compared with the formerly reported polarization rotators based on two-step etching, our introduced device demonstrates a significant improvement for fabrication tolerance. Furthermore, an ultra compact structure of similar to 5 mu m conversion length, an insertion loss of only 0.5 dB, and an extinction ratio of >40 dB for both TE to TM polarization conversion and TM to TE polarization conversion are exhibited. Operation wavelength and the influence of environmental temperature on our device are also discussed. (C) 2013 Optical Society of America

引用

页码：990 / 996

页数：7

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