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光纤电流传感系统影响因素分析 Title:AnalysisofFactorsInfluencingFiberOpticCurrentSensingSystems Abstract: Fiberopticcurrentsensingsystemshavegainedsignificantattentioninrecentyearsduetotheirnumerousadvantages,suchashighsensitivity,immunitytoelectromagneticinterference,andtheabilitytocoverlargedistances.However,likeanyothersensingsystem,thesesystemsarealsoinfluencedbyvariousfactorsthatcanaffecttheiroverallperformance.Thispaperaimstoanalyzethefactorsthatimpacttheaccuracyandreliabilityoffiberopticcurrentsensingsystems. Introduction: FiberopticcurrentsensingsystemsmeasurecurrentbyutilizingtheFaradayeffect.Inthesesystems,thecurrentflowingthroughaconductorinducesamagneticfield,which,inturn,modulatesthepolarizationstateofthelightpropagatingthroughtheopticalfiber.Themodulatedlightsignalisthendetectedandconvertedintoacurrentmeasurement. FactorsAffectingFiberOpticCurrentSensingSystems: 1.Temperature: Temperaturevariationscansignificantlyaffecttheaccuracyoffiberopticcurrentsensingsystems.Temperaturechangescausethefiberandthesensingelementtoexpandorcontract,leadingtochangesintheoutputsignal.Systemcalibrationandtemperaturecompensationtechniquesarerequiredtomitigatethiseffect. 2.MagneticFieldStrength: Fiberopticcurrentsensingsystemsaresensitivetothestrengthofthemagneticfieldproducedbythecurrent.Highmagneticfieldstrengthscanleadtosignalsaturation,limitingthedynamicrangeandaccuracyofthesystem.Fluxconcentratorscanbeusedtoenhancethesensitivityofthesystem. 3.PolarizationDependence: Thepolarizationstateofthelightsignalcanbealteredwhenitpropagatesthroughthesensingelement,resultinginmeasurementinaccuracies.Techniquessuchaspolarizationscramblinganddual-polarizationdetectioncanbeemployedtominimizepolarizationdependence. 4.OpticalFiberCharacteristics: Thepropertiesoftheopticalfiberusedinthesystem,suchasscatteringandattenuation,canimpacttheperformanceoffiberopticcurrentsensingsystems.Lowerattenuationfibersarepreferredtominimizesignalloss,whilescatteringshouldbeminimizedtoreducemeasurementerrors. 5.SystemCa