Compact Low-Loss Optical 72° Hybrid Based on Nonoverlapping-Image Multimode Interference Coupler in Silicon-on-Insulator

被引：3

作者：

Li, Zezheng ^{[1
,2
]}

Kuang, Yingxin ^{[1
,2
]}

Guan, Huan ^{[2
]}

Liu, Yang ^{[1
,2
]}

Zhang, Xinqun ^{[2
]}

Han, Weihua ^{[2
]}

Li, Zhiyong ^{[2
]}

机构：

[1] Univ Chinese Acad Sci, Chinese Acad Sci, Coll Mat Sci & Optoelect Technol, Beijing 100049, Peoples R China

[2] Chinese Acad Sci, Inst Semicond, State Key Lab Integrated Optoelect, Beijing 100083, Peoples R China

来源：

IEEE PHOTONICS JOURNAL | 2019年 / 11卷 / 06期

基金：

中国国家自然科学基金;

关键词：

Integrated optics; multimode interference coupler; silicon-on-insulator; optical hybrid; DESIGN; NUMBER;

D O I：

10.1109/JPHOT.2019.2956260

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 universal principle to achieve different optical hybrids is summarized based on general nonoverlapping-image MMI couplers. An optical 72 degrees hybrid is proposed and demonstrated which is achieved by a 2 x 5 multimode interference (MMI) coupler with length of 89.5 mu m and width of 8.0 mu m. The device is fabricated in silicon-on-insulator (SOI) with 220 nm thick top silicon layer and the buried oxide layer is 3 mu m thick. The proposed device exhibits an extinction ratio larger than 20 dB from 1470.8 nm to 1581.2 nm. The excess loss of optical hybrid is about 1.4 dB and a phase deviation less than +/- 6.0 degrees is obtained with the bandwidth of 51.5 nm.

引用

页数：9

共 23 条

[1] OVERLAPPING-IMAGE MULTIMODE INTERFERENCE COUPLERS WITH A REDUCED NUMBER OF SELF-IMAGES FOR UNIFORM AND NONUNIFORM POWER SPLITTING [J].