Design of polarization-insensitive 2 x 2 multimode interference coupler based on double strip silicon nitride waveguides

被引：9

作者：

Yang, Huimin ^{[1
]}

Zheng, Pengfei ^{[1
]}

Liu, Panpan ^{[1
]}

Hu, Guohua ^{[1
]}

Yun, Binfeng ^{[1
]}

Cui, Yiping ^{[1
]}

机构：

[1] Southeast Univ, Adv Photon Ctr, Nanjing 210096, Jiangsu, Peoples R China

来源：

OPTICS COMMUNICATIONS | 2018年 / 410卷

基金：

美国国家科学基金会;

关键词：

Polarization-insensitive; Multimode interference coupler; Double strip silicon nitride waveguides;

D O I：

10.1016/j.optcom.2017.11.003

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A polarization-insensitive 2 x 2 multimode interference coupler based on double strip silicon nitride waveguides is proposed and optimized by using the three-dimensional finite difference time domain method. By optimizing the device's structure parameters in detail, polarization independent excess loss of -0.32dB is obtained, and negligible output uniformities of -0.02dB and -0.03dB could be achieved for the TE and TM mode, respectively. The optimized polarization-insensitive 2 x 2 multimode interference coupler could be served as a building block on the double strip silicon nitride waveguides platform. (c) 2017 Elsevier B.V. All rights reserved.

引用

页码：559 / 564

页数：6

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