利用光纤耦合衰荡对光纤压力传感器的研究(英文)-豆柴文库

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利用光纤耦合衰荡对光纤压力传感器的研究(英文)
ResearchonFiber-OpticPressureSensorusingCoupledFiberOscillation
Abstract
Fiber-opticpressuresensorshavegainedsignificantattentioninvariousapplicationsduetotheirhighsensitivity,fastresponse,andimmunitytoelectromagneticinterference.Thispaperpresentsastudyonafiber-opticpressuresensorbasedoncoupledfiberoscillation.Thesensorutilizesthephenomenonoflightattenuationcausedbypressure-inducedchangesintherefractiveindexofthefiber.Theexperimentinvolvedfabricatingthesensor,calibratingitsresponsetopressure,andevaluatingitsperformance.Theresultsindicatethatthecoupledfiberoscillationtechniqueoffersapromisingapproachforthedevelopmentofhighlysensitivepressuresensors.
1.Introduction
Pressuresensorsplayavitalroleinnumerousindustriessuchasaerospace,automotive,andmedical,whereaccuratepressuremeasurementsareessentialforensuringsafetyandqualitycontrol.Traditionalpressuresensorsbasedonmechanicalmethodsoftensufferfromlimitations,suchasslowresponse,lowsensitivity,andsusceptibilitytoelectromagneticinterference.Fiber-opticpressuresensors,ontheotherhand,haveemergedasanexcellentalternativeduetotheirnumerousadvantages.
2.PrincipleofFiber-OpticPressureSensor
Theproposedfiber-opticpressuresensorisbasedontheprincipleofcoupledfiberoscillation.Itutilizestwofibersthatarebroughtintocloseproximitytocreateacouplingeffect.Whenapressureisappliedtothesensor,itresultsinachangeintherefractiveindexofthefiber,whichinturncauseslightattenuation.Thischangeinlightintensityisdetectedandrelatedtotheappliedpressure.
3.SensorFabrication
Thesensorwasfabricatedusingstandardsingle-modefibersandaspeciallydesignedcouplingmechanism.Thetwofiberswerecarefullyalignedandfixedtogether,allowingforclosecontact.Apressurechamberwasconnectedtothesensor,providingacontrolledenvironmentforpressuretesting.
4.SensorCalibration
Tocalibratethesensorandestablishitspressure-responsecharacteristics,arangeofpressureswereappliedtothepressurechamber.Thecorrespondinglightintensitychangeswererecordedandanalyzed.Thecalibrationcur