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1、AbstractWiththeamazingexpansionofinformationscienceandtechnology,thetransmissionandprocessingdemandoflargevolumedataandhighspeedinformationishigher.Theopticalfiberdevicesistobecomeanimportantresearchtopicinthefieldofoptoelectronic,whichismicro-nano,inte
2、gration,highperformanceandlowpowerdissipation.Duetothespecialgeometricstructureofopticalmicrofiber,ithasthecharacteristicsofbigsurfacetovolumeratio,greatwaveguidedispersion,highnonlineareffect,lowopticalloss,strongabolitityoflighconstraint,andlargeevane
3、scentfieldeffect.Thusopticalmicrofiberhasbeenattractedalotofattention.Noweadays,itcouldbegainedthroughavarietyoftechnology,anopticalmicrofiberpossessesthespecialtransmissionpropertiesandversatilewaveguidestructures.Micro-nanoandintegrationisthetrendency
4、ofopticalfiberdevices.Itprovidesagoodconditiontodesignphotonictenabilitydevicesduetoeasetocombinetothefunctionmaterials.Magnetic-fielddetectionhasattractedconsiderableresearchinterests,whichplaysanimportantroleinmilitary,aerospace,biomedical,andmechanic
5、altesting.Photonicmagnetic-fieldtunabilitydevicesbasedonopticalmicrofiberandmagneticfluidshowgreatpotentialinthesensingandcommunicationfields.Thepaperintroducesthespectrumcharacteristicsoftheseopticalmicrofiberswhicharefabricatedbytwokindsoftaperingprog
6、ramsanddifferentkindsofopticalfibersandintegratedwithmagneticfluid.Thetheoreticalandexperimentalreaseachesarecarriedout,includingdifferentproductionmethodsofopticalmicrofiber,philosophyanddigitalanalog,andthecorrespondingtentativeresearches.Themagnetic-
7、fieldtunabiltydevicesarerealizedbasedonopticalmicrofibersandmagneticfluids.Inthispaper,theresearchworkmainlyincludes:1.Amagneticfieldtunabilitydeviceisproposedbasedonthecladdingdecreasedthincoremicrofiberandmagneticfluids.Themodefielddistributionischang
8、edthroughthecorrosionofthincorefiber,andthehighsensitiveintensity-interrogatedmagneticfieldtunabilitydeviceisgained.Theoreticalanalysisshowsthatthereasonofthevariationofthetransmissionloss.2.Amagneticfieldtunabilitydeviceofsquare
