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分布式本征型法布里-珀罗传感器的研究.docx

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分布式本征型法布里-珀罗传感器的研究 Abstract TheDistributedIntrinsicFabry-PerotSensor(DIFPS)isarecenttechnologyadvancementinthefieldofdistributedfiberopticsensingthathasgainedsignificantattentionduetoitsadvantagesinspatialresolution,sensingrange,andcost-effectiveness.Inthispaper,wewilldiscusstheDIFPSworkingprinciple,keycomponents,anditsapplicationsinvariousindustrialandenvironmentalfields.Additionally,thispaperwillexploretherecentadvancements,challenges,andfutureprospectsofDIFPStechnology. Introduction Distributedfiberopticsensing(DFOS)isanadvancedtechnologythatenablesthemeasurementofdistributedparameterssuchastemperature,strain,pressure,andchemicalsensingalongtheopticalfiber.Theseparameterscanbemeasuredbyanalyzingthebackscatteredorreflectedlightsignalsfromtheopticalfiber.DFOSprovidesnumerousadvantagesoverconventionalmethodsofsensing,includinghighspatialresolution,real-timemonitoring,andlongsensingdistances.AmongthevarioustypesofDFOSsensors,DistributedIntrinsicFabry-PerotSensor(DIFPS)isgainingsignificantattentionasapromisingtechnologyforvarioussensingapplications. WorkingPrincipleofDIFPS TheDIFPSconsistsofanextrinsicFabry-Perotinterferometer(EFPI)andafiberBragggrating(FBG)sensor.TheEFPIconsistsoftwohighlyreflectivemirrorsthatareseparatedbyacavity.Thedistancebetweenthemirrorschangeswhenachangeinthephysicalparameteroccurs.TheFBGsensorisusedtodeterminetheexactlocationofthechange.WhenlightistransmittedthroughtheEFPI,itformsaninterferencepatternthatisdetectedbyanalyzingtheintensityofthereflectedlight.Theinterferencepatternchangeswhenthephysicalparameterchanges,andthechangeisdetectedbyanalyzingthespectralcontentofthereflectedlightsignal. DIFPSComponents ThekeycomponentsoftheDIFPSaretheextrinsicFabry-Perotinterferometer(EFPI)andthefiberBragggrating(FBG)sensor.TheEFPIcomprisestwohighlyreflectivemirrorsthatareseparatedbyacavityandismadeupoffiberopticmaterial.TheFBGsensorconsistsofaperiodicgratingstructurethatreflectsaspecificwavelengthoflightandisusedasareferencepointtodeterminethepositionof