基于石墨烯的侧边抛磨光纤和微纳光纤光控特性研究

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1、AbstractOpticalfibersensingisanimportantfieldofopticalfibertechnology.Thedevelopmentofopticalfibersensingbeganin1970s,andhasbeenpaidgreatattention.Sidepolishedfiberandmicronanofiberwhichareusedasbasesofopticalfibersensorhavebeenwidelyusedandplayanimp

2、ortantroleinphotoelectricsensordetection.Grapheneisatwo-dimensionalhoneycombcrystalwhichcomposedofasinglelayercarbonatoms.Thediscoveryofgraphenehasdrawngreatattentionofscientists.Duetographene'suniqueproperties,ithasbeenforecastedtocausearevolutionar

3、ychangeinmanyfields.However,theapplicationsofgraphenehavebeenhinderedbyitspoorsolubilityandlowyield,whicharemainlycausedbyitshighinter-layerattractionenergies.Therefore,wemakethemethylblue-functionalizedreducedgrapheneoxide.Thesidepolishedfibergenera

4、llyreferstothespecialopticalfiberthatisformedbythestandardsingle-modeopticalfiberremovedthepartcladdingbythesidepolishingtechnologyorchemicalcorrosionmethod.Micronanofiberisthespecialopticalfiberwithadiameterofseveralhundrednanometerstoseveralmicrome

5、ters.Theycanbefabricatedbyflame-heatingandtaper-drawingtechniques.Themaincontentofthispaperisexploringthelight-dependentcontrolpropertyofsidepolishedopticalfiberwhichoverloadedgrapheneandmicronanofiberwhichoverloadedmethylblue-functionalizedreducedgr

6、apheneoxide.Grapheneisdepositedontothesidepolishedareaofthesidepolishedfiberbyusingnaturalevaporationdeposition.Wemeasuretheopticaltransmittedpowerinsidepolishedfiberwhileusingthepumpinglightof405nmilluminatedontotheareadepositedbygraphene.Theresults

7、showsidepolishedfiberoverloadedgraphenehasahighsensitivityoflight-dependentwithpumpinglightof405nm.Whenthepumpinglightpowerchangefrom0mwto11mw,thechangeoflightpoweris3.4dBthroughthefibersensor,linearcorrelationbetweenrelativepowerwiththepumpinglightp

8、owerincreaseashighas97.1%withthesensitivityis0.29dB/mw.Andthechangeoflightpoweris2.9dBthroughthefibersensor,linearcorrelationbetweenrelativepowerwiththepumpinglightpowerdecreaseashighas96.5%withthesensitivityis0.25III万方数据dB/mw.Methylblue-functionaliz