Design of high efficiency grating coupler for vertical coupling - 文章详情页

作者：

Wu, Hua (Wu, Hua.) | Guo, Xia (Guo, Xia.) (学者：郭霞) | Han, Ming-Fu (Han, Ming-Fu.)

收录：

EI Scopus PKU CSCD

摘要：

A　high-efficiency　grating　coupler　is　designed　for　vertical　coupling　between　silicon-on-insulator　waveguides　and　single-mode　fibers.　The　reflection　characteristics　of　reflector　grating　and　distributed　bragg　reflector　are　employed　to　obtain　a　high　reflection　from　the　right　side　and　bottom　of　the　coupler.　The　reflected　light　is　interfered　destructively　to　reduce　the　negative　second-order　reflection　by　selecting　a　reasonable　spacing　between　the　reflector　grating　and　the　coupler　grating　when　the　coupler　grating　is　in　the　vertical　coupling.　The　coupler　is　optimized　using　eigenmode　expansion-based　simulations.　The　highest　coupling　efficiency　of　89%　at　a　wavelength　1　550　nm　is　achieved　by　simulation.　The　results　provide　some　useful　references　for　the　fabrication　of　the　actual　vertical　coupling　grating　coupler.

关键词：

Efficiency Expansion Reflection Silicon on insulator technology Single mode fibers

作者机构：

[ 1 ] [Wu, Hua]Photonic Device Research Laboratory, Institute of Electronic Information and Control Engineering, Beijing University of Technology, Beijing 100124, China
[ 2 ] [Wu, Hua]School of Physics and Electronic Information, Gannan Normal University, Ganzhou, Jiangxi 341000, China
[ 3 ] [Guo, Xia]Photonic Device Research Laboratory, Institute of Electronic Information and Control Engineering, Beijing University of Technology, Beijing 100124, China
[ 4 ] [Han, Ming-Fu]Photonic Device Research Laboratory, Institute of Electronic Information and Control Engineering, Beijing University of Technology, Beijing 100124, China

通讯作者信息：

电子邮件地址：

guo@bjut.edu.cn

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