短腔干涉式光纤微压传感器解调方法研究-豆柴文库

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短腔干涉式光纤微压传感器解调方法研究
Title:ResearchonDemodulationMethodsforShortCavityInterferometricFiberOpticMicroPressureSensors
Abstract:
Inrecentyears,fiberopticsensorshaveemergedasapromisingsolutionforvarioussensingapplicationsduetotheirbenefitsofhighsensitivity,immunitytoelectromagneticinterference,anddistributednature.Amongthem,shortcavityinterferometricfiberopticmicropressuresensorshaveattractedsignificantattentionfortheirabilitytomeasureextremelysmallpressurevariations.Thisresearchpaperaimstostudyandanalyzedifferentdemodulationmethodsforsuchsensors,whichplayavitalroleinextractingpressureinformationaccuratelyandreliably.
Introduction:
Fiberopticsensorshavedemonstratedtheircapabilitytomeasureawiderangeofphysicalparameters,includingpressure,temperature,strain,andvibration.Particularly,fiberopticpressuresensorsbasedontheprincipleofinterferometryhaveshowngreatpotentialforaccurateandsensitivepressuremeasurements.Shortcavityinterferometricfiberopticmicropressuresensors,withtheiradvantagesofsmallsize,highsensitivity,andfastresponsetime,havegainedincreasingpopularityinapplicationssuchasmedicaldevices,aerospace,andautomotiveindustries.
Thedemodulationprocessisacrucialstepinobtainingaccuratepressuremeasurementsfrominterferometricfiberopticpressuresensors.Demodulationmethodsaimtoextractthephasechangecausedbypressurevariationsinthefiberopticsensorandconvertitintocorrespondingpressurevalues.Differentdemodulationtechniqueshavebeenproposedintheliterature,eachwithitsownadvantagesandlimitations.Thisresearchpaperinvestigatessomeofthecommonlyuseddemodulationmethodsandtheirperformancecharacteristics.
DemodulationMethods:
1.Intensity-BasedDemodulation:Thismethodmeasuresthepowerorintensityofthelightsignalreceivedfromthesensorandrelatesittothepressurevalue.Intensity-baseddemodulationmethodsincludedirectintensitymeasurement,fiberopticintensitymodulation,anddual-polarizationintensitymodulation.Thesemethodsarerelativelysimpleandcost-effective,buttheymaysufferfromlimitedsensitivityandsensitivitytoenvi