磁致圆二向色性对法拉第旋转器消光比的影响  

Effect of magnetic circular dichroism on Faraday rotator's extinction ratio

作　　者：王光辉[1] 吴福全[1] 

机构地区：[1]曲阜师范大学激光研究所,曲阜273165

出　　处：《激光技术》1999年第6期350-352,共3页Laser Technology

摘　　要：从磁光材料的介电张量出发，分析了法拉第旋转器消光比与磁致圆二向色性的关系，在此基础上，讨论了铋钙钒ＢｉＣａＩｎＶＩＧ 法拉第旋转器磁致圆二向色性对光隔离器隔离度、插入损耗的影响。Starting from dielectric tensor of magnetic optical materials,this paper analyzed the relation between magnetic circular dichroism(MCD) and Faraday extinction ratio,and showe that the extinction ratio of magnetic optical materials was defined by MCD and MCB(magnetic circular birefraction). As an example,the BiCaInVIG material was used to be a optical isolator to discuss the isolation level and insertion loss.The numerical calculation indicated,if MCD was less than 0.2,the optical isolation level would be less than 30dB.

关 键 词：磁光材料 法拉第旋转器 消光比 光隔离器 

分 类 号：TN627[电子电信—电路与系统]