基于相变材料的偏振分束器开关  

Polarization Beam Splitter Switch Based on Phase Change Materials

作　　者：杨炯 Yang Jiong(School of IoT Engineering,Jiangnan University,Wuxi,China)

机构地区：[1]江南大学物联网工程学院,江苏无锡

出　　处：《科学技术创新》2024年第18期66-69,共4页Scientific and Technological Innovation

摘　　要：光开关是光子集成电路中用于可重构光传输网络的重要部件之一,功能丰富,性能优异的光开关一直是重要的研究方向。本文提出了一种基于相变材料(PCM)的偏振分束器(PBS)光开关,器件由两个平行的直波导构成,其中一个硅波导中嵌入PCM,能实现当PCM在非晶态时,将输入的TE_(0)和TM_(0)分离。而在晶态时,入射光以较低损耗通过硅波导。该开关仅有14*4μm的紧凑尺寸,耦合长度仅为7.1μm,非晶态时,TM和TE偏振的ER分别高达19.9 dB和19.4 dB,IL分别低至0.2和0.1 dB。晶态时,TM_(0)和TE0直接通过Thru端口。TM_(0)和TE_(0)的插入损耗分别是0.6 dB和0.2 dB。Optical switches are one of the important components used in reconfigurable optical transmission networks in photonic integrated circuits.Optical switches with rich functions and excellent performance have always been an important research direction.This paper proposes a polarizing beam splitter(PBS)optical switch based on phase change material(PCM).The device is composed of two parallel curved silicon waveguides.PCM is embedded in one of the silicon waveguides,which can realize the operation when PCM is in the amorphous state.When separating the input TE_(0) and TM_(0).In the crystalline state,incident light passes through the silicon waveguide with lower loss.The switch has a compact size of only 14*4μm and a coupling length of only 7.1μm.In the amorphous state,the ER of TM and TE polarization is as high as 19.9 dB and 19.4 dB,respectively,and the IL is as low as 0.2 and 0.1 dB,respectively.In the crystal state,TM_(0) and TE_(0) pass directly through the Thru port.The insertion losses of TM0 and TE0 are 0.6 dB and 0.2 dB respectively.

关 键 词：集成光学 集成光器件 光开关 偏振分束器 相变材料 

分 类 号：TN252[电子电信—物理电子学]