Low-loss two-dimensional silicon photonic grating coupler with a backside metal mirror

被引：71

作者：

Luo, Yannong ^{[1
,2
]}

Nong, Zhichao ^{[1
,2
]}

Gao, Shengqian ^{[1
,2
]}

Huang, Huamao ^{[3
]}

Zhu, Yuntao ^{[1
,2
,4
]}

Liu, Liu ^{[4
]}

Zhou, Lidan ^{[1
,2
]}

Xu, Jian ^{[5
]}

Liu, Lin ^{[1
,2
]}

Yu, Siyuan ^{[6
]}

Cai, Xinlun ^{[1
,2
]}

机构：

[1] Sun Yat Sen Univ, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Guangdong, Peoples R China

[2] Sun Yat Sen Univ, Sch Elect & Informat Technol, Guangzhou 510275, Guangdong, Peoples R China

[3] South China Univ Technol, Sch Phys & Optoelect, Engn Res Ctr Optoelect Guangdong Prov, Guangzhou 510640, Guangdong, Peoples R China

[4] South China Normal Univ, Higher Educ Mega Ctr, SCNU ZJU Joint Res Ctr Photon, Ctr Opt & Electmagnet Res,South China Acad Adv Op, Sci Bldg 5, Guangzhou 510006, Guangdong, Peoples R China

[5] South China Acad Adv Optoelect, Sch Econ & Commerce, Guangzhou 510640, Guangdong, Peoples R China

[6] Univ Bristol, Dept Elect & Elect Engn, Univ Walk, Bristol BS8 1TR, Avon, England

来源：

OPTICS LETTERS | 2018年 / 43卷 / 03期

基金：

中国国家自然科学基金;

关键词：

POLARIZATION-DEPENDENT LOSS; OPTICAL-FIBERS;

D O I：

10.1364/OL.43.000474

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We design and fabricate a low-loss silicon photonic two-dimensional grating coupler that serves to couple light between standard single-mode fibers and single-mode wave-guides in the silicon-on-insulator platform and to split both orthogonal polarization states. The efficiency of the fabricated device is enhanced by a backside metal mirror and reaches a record value of -1.8 dB with a 1 dB bandwidth of 32 nm around 1550 nm. The demonstrated coupling efficiency is 2.2 dB better than the conventional two-dimensional grating coupler without a metal mirror. (c) 2018 Optical Society of America

引用

页码：474 / 477

页数：4

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