Optical 90° Hybrid Based on an InP 4 × 4 Multimode Interference Coupler for Coherent Receiver Application  

作　　者：LIU Wei-Hua ZHAO Yan-Li XU Cheng-Zhi ZHAO Jian-Yi LIU Wen XU Yuan-Zhong 刘卫华;赵彦立;徐成植;赵建宜;刘文;许远忠(Wuhan National Laboratory for Optoelectronics,College of Optoelectronic Science and Engineering,Huazhong University of Science and Technology,Wuhan 430074;Wuhan Telecommunication Device Co.Ltd.,Wuhan 430074)

机构地区：[1]Wuhan National Laboratory for Optoelectronics,College of Optoelectronic Science and Engineering,Huazhong University of Science and Technology,Wuhan 430074 [2]Wuhan Telecommunication Device Co.Ltd.,Wuhan 430074

出　　处：《Chinese Physics Letters》2012年第6期163-165,共3页中国物理快报（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grant No 61076042;the Special Project on Development of National Key Scientific Instruments and Equipment of China under Grant No 2011YQ16000205;the National Key Technology R&D Program of China under Grant No 2009BAH49B01;the National High Technology Research and Development Program(863 Program)of China under Grant Nos 2011AA03A106 and 2011AA010304,Science and Technology Special Project in Hubei Province(No 2009AAA009);the Natural Science Foundation of Hubei Province(No 2010CDB01606);the Research Funds for the Central Universities(HUST No 2011QN036).

摘　　要：An optical 90° hybrid based on an InP 4 × 4 multimode interference (MMI) coupler is designed and fabricated for the application in a coherent receiver.It reveals that the width of multimode waveguide is the most critical parameter for the devices,and the multimode waveguide width can be accurately controlled within 0.1 μm in our experiments.Across the entire C-band (1527-1561 nm),the maximum imbalance of the devices is less than 0.7dB,and the common mode rejection ratios for in-phase channels and quadrature channels are better than - 24 dB.

关 键 词：WAVEGUIDE MULTIMODE INP 

分 类 号：TN2[电子电信—物理电子学]