摘要
Weproposeafullydistributedfusionsystemcombiningphase-sensitiveopticaltime-domainreflectometry(Φ-OTDR)andOTDRforsynchronousvibrationandlossmeasurementbysettinganingeniousfrequencysweeprate(FSR)oftheopticalsource.TherelationshipsbetweenFSR,probepulsewidthandrepeatperiodaregiventobalancetheamplitudefluctuationofOTDRtraces,thedeadzoneprobabilityandthemeasurablefrequencyrangeofvibrationevents.Intheexperiment,weachievesynchronousvibrationandlossmeasurementwithFSRof40MHz/s,theproblepulsewidthof100nsandrepeatrateof0.4ms.ThefluctuationofOTDRtraceislessthan0.45dBwhenthesignalto-noiseratio(SNR)isover12dBforacapturedvibrationeventlocatedat9.1km.Theproposedmethodcanbeusedfornotonlydetectionbutalsoearlywarningofdamageeventsinopticalcommunicationnetworks.
出版日期
2016年05月15日（中国期刊网平台首次上网日期，不代表论文的发表时间）
