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
收藏
页码：559 / 564
页数：6
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