Ultracompact silicon on-chip polarization controller  

作　　者：WEIKE ZHAO YINGYING PENG MINGYU ZHU RUORAN LIU XIAOLONG HU YAOCHENG SHI DAOXIN DAI 

机构地区：[1]State Key Laboratory for Modern Optical Instrumentation,Center for Optical&Electromagnetic Research,College of Optical Science and Engineering,International Research Center for Advanced Photonics,Zhejiang University,Zijingang Campus,Hangzhou 310058,China [2]School of Precision Instrument and Optoelectronic Engineering,Tianjin University,Tianjin 300072,China [3]Key Laboratory of Optoelectronic Information Science and Technology,Ministry of Education,Tianjin 300072,China [4]Ningbo Research Institute,Zhejiang University,Ningbo 315100,China

出　　处：《Photonics Research》2024年第2期183-193,共11页光子学研究（英文版）

基　　金：National Key Research and Development Program of China(2019YFB2203603);National Science Fund for Distinguished Young Scholars(61725503);National Natural Science Foundation of China(61961146003,62005238,91950205);Natural Science Foundation of Zhejiang Province(LD19F050001,LZ18F050001);Fundamental Research Funds for the Central Universities。

摘　　要：On-chip polarization controllers are extremely important for various optical systems.In this paper,a compact and robust silicon-based on-chip polarization controller is proposed and demonstrated by integrating a special polarization converter and phase shifters.The special polarization converter consists of a 1×1 Mach–Zehnder interferometer with two polarization-dependent mode converters at the input/output ends.When light with an arbitrary state of polarization(SOP)is launched into the chip,the TE_(0)and TM_(0)modes are simultaneously excited.The polarization extinction ratio(PER)and the phase difference for the TE_(0)∕TM_(0)modes are tuned by controlling the first phase shifter,the polarization converter,and the second phase shifter.As a result,one can reconstruct the light SOP at the output port.The fabricated polarization controller,as compact as~150μm×700μm,exhibits an excess loss of less than 1 dB and a record PER range of>54 dB for arbitrary input light beams in the wavelength range of 1530–1620 nm.

关 键 词：POLARIZATION SOP INTERFEROMETER 

分 类 号：O436.3[机械工程—光学工程]