High common mode rejection ratio InP 90° optical hybrid in ultra-broadband at 60 nm with deep-rigded waveguide based on ×4 MMI coupler

doi:10.1088/1674-1056/ab7b52

中国物理B ›› 2020, Vol. 29 ›› Issue (5): 54206-054206.doi: 10.1088/1674-1056/ab7b52

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇下一篇

High common mode rejection ratio InP 90° optical hybrid in ultra-broadband at 60 nm with deep-rigded waveguide based on ×4 MMI coupler

Zi-Qing Lu(陆子晴), Qin Han(韩勤), Han Ye(叶焓), Shuai Wang(王帅), Feng Xiao(肖峰), Fan Xiao(肖帆)

1 State Key Laboratory on Integrated Optoelectronics, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China;
2 Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China;
3 School of Electronic, Electrical and Communication Engineering, University of Chinese Academy of Sciences, Beijing 100049, China

收稿日期:2019-12-17 修回日期:2019-12-26 出版日期:2020-05-05 发布日期:2020-05-05
通讯作者: Qin Han E-mail:hanqin@semi.ac.cn
基金资助:
Project supported by the National Key Research and Development Program of China (Grant No. 2016YFB0402404), the Beijing Natural Science Foundation, China (Grant No. 4194093), and the National Natural Science Foundation of China (Grant Nos. 61635010, 61674136, and 61435002).

High common mode rejection ratio InP 90° optical hybrid in ultra-broadband at 60 nm with deep-rigded waveguide based on ×4 MMI coupler

Zi-Qing Lu(陆子晴)^1,2, Qin Han(韩勤)^1,2,3, Han Ye(叶焓)^1,2, Shuai Wang(王帅)^1,2, Feng Xiao(肖峰)^1,2, Fan Xiao(肖帆)^1,2

1 State Key Laboratory on Integrated Optoelectronics, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China;
2 Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China;
3 School of Electronic, Electrical and Communication Engineering, University of Chinese Academy of Sciences, Beijing 100049, China

Received:2019-12-17 Revised:2019-12-26 Online:2020-05-05 Published:2020-05-05
Contact: Qin Han E-mail:hanqin@semi.ac.cn
Supported by:
Project supported by the National Key Research and Development Program of China (Grant No. 2016YFB0402404), the Beijing Natural Science Foundation, China (Grant No. 4194093), and the National Natural Science Foundation of China (Grant Nos. 61635010, 61674136, and 61435002).

摘要/Abstract

摘要： An InP optical 90° hybrid based on a×4 MMI coupler with a deep ridged waveguide is designed and fabricated. The working principle of the 90° hybrid is systematically introduced. Three-dimensional beam ropagation method (3D BPM) is used to optimize the structure parameters of the 90° hybrid. The designed compact structure is demonatrated to have a low excess loss less than -0.15 dB, a high common mode rejection ratio better than 40 dB, and a low relative phase deviation less than ±2.5°. The designed hybrid is manufactured on a sandwitched structure deposited on an InP substrate. The measured results show that the common mode rejection ratios are larger than 20 dB in a range from 1520 nm to 1580 nm. The phase deviations are less than ±5° in a range from 1545 nm to 1560 nm and less than ±7° across the C band. The designed 90° optical hybrid is suitable well for realizing miniaturization, high-properties, and high bandwidth of coherent receiver.

关键词: 90° hybrid, ×4 MMI coupler, deep ridge, high common mode rejection ratio

Abstract: An InP optical 90° hybrid based on a×4 MMI coupler with a deep ridged waveguide is designed and fabricated. The working principle of the 90° hybrid is systematically introduced. Three-dimensional beam ropagation method (3D BPM) is used to optimize the structure parameters of the 90° hybrid. The designed compact structure is demonatrated to have a low excess loss less than -0.15 dB, a high common mode rejection ratio better than 40 dB, and a low relative phase deviation less than ±2.5°. The designed hybrid is manufactured on a sandwitched structure deposited on an InP substrate. The measured results show that the common mode rejection ratios are larger than 20 dB in a range from 1520 nm to 1580 nm. The phase deviations are less than ±5° in a range from 1545 nm to 1560 nm and less than ±7° across the C band. The designed 90° optical hybrid is suitable well for realizing miniaturization, high-properties, and high bandwidth of coherent receiver.

Key words: 90° hybrid, ×4 MMI coupler, deep ridge, high common mode rejection ratio

中图分类号: (Optical communication systems, multiplexers, and demultiplexers?)

42.79.Sz

42.25.Hz (Interference) 42.79.Gn (Optical waveguides and couplers) 42.82.Fv (Hybrid systems)

陆子晴, 韩勤, 叶焓, 王帅, 肖峰, 肖帆. High common mode rejection ratio InP 90° optical hybrid in ultra-broadband at 60 nm with deep-rigded waveguide based on ×4 MMI coupler[J]. 中国物理B, 2020, 29(5): 54206-054206.

Zi-Qing Lu(陆子晴), Qin Han(韩勤), Han Ye(叶焓), Shuai Wang(王帅), Feng Xiao(肖峰), Fan Xiao(肖帆). High common mode rejection ratio InP 90° optical hybrid in ultra-broadband at 60 nm with deep-rigded waveguide based on ×4 MMI coupler[J]. Chin. Phys. B, 2020, 29(5): 54206-054206.

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High common mode rejection ratio InP 90° optical hybrid in ultra-broadband at 60 nm with deep-rigded waveguide based on ×4 MMI coupler

High common mode rejection ratio InP 90° optical hybrid in ultra-broadband at 60 nm with deep-rigded waveguide based on ×4 MMI coupler

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