Silicon non-blocking 4×4 optical switch with automated polarization adjustment

作     者：李晓蕊 陆梁军 高伟 李鑫 陈建平 周林杰 Xiaorui Li;Liangjun Lu;Wei Gao;Xin Li;Jianping Chen;Linjie Zhou

作者机构：State Key Laboratory of Advanced Optical Communication Systems and NetworksShanghai Institute for Advanced Communication and Data ScienceShanghai Key Laboratory of Navigation and Location ServicesDepartment of Electronic EngineeringShanghai Jiao Tong UniversityShanghai 200240China 

出 版 物：《Chinese Optics Letters》 (中国光学快报（英文版）)

年 卷 期：2021年第19卷第10期

页      面：38-43页

核心收录：

学科分类：0808[工学-电气工程] 070207[理学-光学] 0809[工学-电子科学与技术（可授工学、理学学位）] 07[理学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：supported in part by the National Key Research and Development Program(Nos.2019YFB2203200,2019YFB1802903,and 2018YFB2201702) the National Natural Science Foundation of China(NSFC)(Nos.6207030193 and 62090052) the Shanghai Municipal Science and Technology Major Project(No.2017SHZDZX03) the Open Project Program of Wuhan National Laboratory for Optoelectronics(No.2019WNLOKF004) 

主　　题：optical switch polarization control silicon photonics optical routing 

摘      要：We demonstrate a polarization-insensitive silicon 4×4 optical switch based on Mach–Zehnder interferometer(MZI)switch ***-chip polarization controllers are integrated before the switch fabric to automatically adjust an arbitrary input polarization to the transverse electric *** 4×4 switch fabric is based on a dilated double-layer network architecture to completely cancel the first-order ***-optic phase shifters are integrated in the MZI switch elements and the polarization controllers for adjustment of the switching state and polarization,*** develop a polarization control algorithm based on a gradient descent method for automated polarization *** polarization recovery time is less than 4 ms,and the measured polarization-dependent loss is~2 d *** scheme provides a new solution for realizing polarization-insensitive silicon optical switches.