Realization of a Compact Broadband Polarization Beam Splitter Using the Three-Waveguide Coupler

被引：19

作者：

Cheng, Zhuo ^{[1
]}

Wang, Jun ^{[1
]}

Huang, Yongqing ^{[1
]}

Ren, Xiaomin ^{[1
]}

机构：

[1] Beijing Univ Posts & Telecommun, State Key Lab Informat Photon & Opt Commun, Beijing 10086, Peoples R China

来源：

IEEE PHOTONICS TECHNOLOGY LETTERS | 2019年 / 31卷 / 22期

基金：

美国国家科学基金会; 北京市自然科学基金;

关键词：

Silicon photonics; integrated optics; polarization beam splitter; three-waveguide coupler; HIGH-EXTINCTION-RATIO; WAVE-GUIDE; SILICON WIRE; ULTRACOMPACT; DESIGN;

D O I：

10.1109/LPT.2019.2948076

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A compact broadband polarization beam splitter is designed and experimentally demonstrated based on a silicon-nitride-assisted three-waveguide coupler. With the help of coving a layer of silicon nitride on the center bridged silicon waveguide, the phase matching is met for the TM mode but not for the TE mode. The final optimized device length is only 7 mu m, and the polarization beam splitter has the high extinction ratios of more than 30 dB for the TE mode and that of more than 20 dB for the TM mode in the wavelength ranging from 1.5 mu m to 1.6 mu m. And the corresponding insertion losses are less than 0.06 dB and 0.35 dB, respectively. The experimental measurement results also show the polarization beam splitter has good performances.

引用

页码：1807 / 1810

页数：4

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