磁性材料及器件第54卷第2期2023年3月•17•磁光隔离器插入损耗与隔离度关键影响因素数学分析刘庆元，王涛，李阳，魏占涛，帅世荣，李俊，陈敏，肖礼康，蓝江河(中国电子科技集团第九研究所，四川绵阳621000)摘要：从定量角度出发，详细分析了磁光隔离器的插入损耗与隔离度的关键影响因素，并给出了具体的数学表达式。从数学原理证明隔离器的插入损耗主要由材料吸收和端面反射率决定，而隔离度主要取决于法拉第旋光微扰角度。法拉第旋光角微扰度与通光波长、环境温度、磁光材料的费尔德常数及厚度、以及偏置磁场强度等因素有关，给出了相关数学表达式，并证明通光波长的变化、温度波动等因素是影响器件隔离度的关键因素。关键词：磁光隔离器；插入损耗；隔离度；影响因素中图分类号：TN627文献标识码：A文章编号：1001-3830(2023)02-0017-06DOI:10.19594/j.cnki.09.19701.2023.02.004著录格式：刘庆元,王涛,李阳,等.磁光隔离器插入损耗与隔离度关键影响因素数学分析[J].磁性材料及器件,2023,54(2):17-22.//LIUQing-yuan,WANGTao,LIYang,etal.Mathematicalanalysisofkeyfactorsaffectinginsertionlossandisolationdegreeofmagneto-opticalisolator[J].JournalofMagneticMaterialsandDevices,2023,54(2):17-22.Mathematicalanalysisofkeyfactorsaffectinginsertionlossandisolationdegreeofmagneto-opticalisolatorLIUQing-yuan,WANGTao,LIYang,WEIZhan-tao,SHUAIShi-rong,LIJun,CHENMin,XIAOLi-kang,LANJiang-heSouthwestInstituteofAppliedMagnetics,Mianyang621000,ChinaAbstract:Thekeyfactorsaffectinginsertionloss(IL)andisolation(ISO)ofmagneto-opticisolatorareanalyzedquantitatively,andthemathematicalexpressionsofILandISOaregiveninthispaper.Itisprovedfrommathematicallythattheinsertionlossismainlydeterminedbythematerialabsorptionandtheinterfacereflectance,andtheisolationdegreeismainlydeterminedbytheperturbationoftheFaradayrotationangle.TheperturbationoftheFaradayrotationangleisrelatedtothewavelengthofthelight,theambienttemperature,theVerdetconstantandthicknessofthemagneto-opticmaterial,andthebiasmagneticfield.Relatedmathematicalexpressionsarealsogiveninthiswork,anditisfurtherprovedthatthekeyfactorsaffectingtheisolationdegreearethevariationofwavelength,temperaturefluctuationandmagne...
