一种新型偏振相关磁光隔离器的设计  

Design of a Novel Polarization-Dependent Magneto-optical Isolator

作　　者：郝俊祥 杨青慧[1] 张怀武[1] HAO Junxiang;YANG Qinghui;ZHANG Huaiwu(State Key Laboratory of Electronic Thin Films and Integrated Devices,University of Electronic Science and Technology of China,Chengdu 610054,China)

机构地区：[1]电子科技大学电子薄膜与集成器件国家重点实验室,四川成都610054

出　　处：《压电与声光》2018年第6期840-842,共3页Piezoelectrics & Acoustooptics

基　　金：国家自然科学基金资助项目(51472046;51272036;51002021;61131005)

摘　　要：该文介绍了一种新型的光纤型法拉第磁光隔离器设计方法,利用液相外延制备的单晶石榴石(BiTm)3(GaFe)5O12膜作为法拉第转子,通过对光路结构的改进设计,有效降低了光隔离器体积和所需饱和外场。当外磁场H=47×103 A/m时,法拉第旋角可达到45°@1 550nm,光吸收系数为15cm-1@1 550nm,光透射率为85%@1 550nm,整体满足设计要求。The design method of a novel fiber optic Faraday magneto-optical isolator is introduced in this paper.The size of the isolator and the required saturated field are effectively reduced by using the single crystal garnet(BiTm)3(GaFe)5 O12 film prepared by the liquid phase epitaxy as the Faraday rotator and through the improved design of the optical path structure.When the external magnetic field is H=47×103 A/m,the Faraday rotations angle is up to 45°@1 550 nm,the optical absorption coefficient is 15 cm-1@1 550 nm,and the light transmittance is85%@1 550 nm,which satisfied the over-all design requirements.

关 键 词：磁光隔离器 法拉第效应 (BiTm)3(GaFe)5O12膜 光纤 液相外延 

分 类 号：TN913.7[电子电信—通信与信息系统] TN818[电子电信—信息与通信工程]