简介:Superluminescencediode(SLD)moduleswithwidespectrumcharacteristicsarerequiredinfibergyroscopes.A1.3μmbutterflypackagedsuperluminescencediodewiththespectrumwidthover30nmisreportedandrecentadvancesinprocessofSLDisdescribedinthepaper.TheSLDmoduleshavebeenappliedtofibergyroscopes.
简介:Self-organizedIn0.5Ga0.5As/GaAsquantumislandstructureemittingat1.35μmatroomtemperaturehasbeensuccessfullyfabricatedbymolecularbeamepitaxy(MBE)viacycled(InAs)1/(GaAs)1monolayerdepositionmethod.Photoluminescence(PL)measurementshowsthatverynarrowPLlinewidthof19.2meVat300Khasbeenreachedforthefirsttime,indicatingeffectivesuppressionofinhomogeneousbroadeningofopticalemissionfromtheIn0.5Ga0.5Asislandsstructure.Ourresultsprovideimportantinformationforoptimizingtheepitaxialstructuresof1.3μmwavelengthquantumdot(QD)devices.
简介:Anexperimentalwaytoanalyzethethermalcharacteriztionofsemiconductorlasersbasedonspectroscopymethodunderpulsedrivingconditionshasbeendeveloped,Byusingthiswaythethermalcharacteristicssofstraincompensated1.3μmInAsP/InGaAsPridgewaveguideMQWlaserdiodeshavebeeninvestigated.Resultsshovwthatbymeasuringandanalyzingthelasingspectraunderappropriatedrivingparametersandtemperatureranges,thethermalresistanceofthelaserdiodescouldbededucedeasily,Ahigerthermalresistanceof640K/Whasbeenmeasuredonanarrowridgelaserchipwithoutsoldering.Otherthermalandspectralpropertiesofthelaserhavealsobeenmeasuredanddiscussed.
简介:AnexperimentalwayforthethermalcharacterizationofsemiconductorlasersbasedonI-Vmethodunderpulsedrivingconditionshasbeendeveloped,withwhichthethermalcharacteristicsofstraincompensated1.3μmInAsP/InGaAsPridgewaveguideMQWlaserchipshavebeeninvestigated.Theresultsshowthat,bymeasuringandanalyzingtheI-Vcharacteristicsunderappropriatepulsedrivingconditionsatdifferentheatsinktemperatures,thethermalresistanceofthelaserdiodescouldbeeasilydeduced.Thedrivingcurrentandjunctionvoltagewaveformsofthelaserchipsunderdifferentpulsedrivingconditionsarealsodiscussed.
简介:摘要:签派员是航空公司运行方面不可或缺的角色,其高质量的放行监控工作有利于航空公司的运行。近三年来受全球新冠肺炎疫情冲击,各大航空公司运营困难。为提高航空公司日常运行质量,本文客观评价签派放行监控工作,通过对签派员工作流程的全面分析,建立一个多维度绩效指标管理模型,并利用层次分析法确定各个指标的权重值,为提升签派员放行监控工作质量提供科学依据。