简介：Speckleinterferometryisanefficientmethodtoanalyzeavibration.Incetrainconditions,thistechniquehassomeoutsandingadvantage,andneednotstrictshock-proofcondition,comparedwiththeholographicmethodformeasuringvibration,Therefors,itissuitabletoanayyzeavibrationwithalogaramplitude.Real-timeinterferometryisarapidandsimplemethodformeasuringvibrationofabody,givesspecklepatterncontainingamplitudedistributionofbody-surface.Bymeansoftime-averagedmethod.thespecklepatternisrecordedinFouriertransformplane.orvibra-tionlinesareseendirectlywitheyes,soastoanalyzeefficientlyampitude.phase,andmod-elofavibration.Thispaperdeducestheintensitydistributionfunctionwithreal-timemethod,andgivesexpermentaldemonstrationofvibrationbody-thevibrationlineswithdifferentfrequencies.

简介：Weproposeafullydistributedfusionsystemcombiningphase-sensitiveopticaltime-domainreflectometry(Φ-OTDR)andOTDRforsynchronousvibrationandlossmeasurementbysettinganingeniousfrequencysweeprate(FSR)oftheopticalsource.TherelationshipsbetweenFSR,probepulsewidthandrepeatperiodaregiventobalancetheamplitudefluctuationofOTDRtraces,thedeadzoneprobabilityandthemeasurablefrequencyrangeofvibrationevents.Intheexperiment,weachievesynchronousvibrationandlossmeasurementwithFSRof40MHz/s,theproblepulsewidthof100nsandrepeatrateof0.4ms.ThefluctuationofOTDRtraceislessthan0.45dBwhenthesignalto-noiseratio(SNR)isover12dBforacapturedvibrationeventlocatedat9.1km.Theproposedmethodcanbeusedfornotonlydetectionbutalsoearlywarningofdamageeventsinopticalcommunicationnetworks.

简介：基于极化察觉察觉到系统的新奇分布式的光纤维颤动被建议并且示威。一面法拉第转子镜子在系统的结束被采用，它消除到外部颤动干扰引起的快速的极化变化的信号光和仅仅回答的慢极化变化。基于察觉到的信号特征，极化骚乱点的地点能精确地被检测。极化控制器模拟和实际颤动察觉的实验证明比1%好的更高的本地化精确性成功地在察觉到纤维系统的13.8km，21.2km和35.8km被获得。

简介：为了完成操纵者的软掌握，工作，钥匙是有与好性能滑动传感器。取决于弹性体和光电的元素在手里安装了，传感器转变在掌握的目标和机器人的手之间的滑动到电的信号，因此，滑动能被检测。它当目标是滑动时，愿望原因弹性体是微颤动的。基于颤动理论，动态理论，轻紧张理论和有弹性的变丑理论，发源是目标是机器人的手有的滑动加速relativingto的结论与光电的元素的产量的线性关系电压的微分，然后为滑动区分的模型被建立。

简介：Anovelfibergratingvibrationdemodulationsystem,basedon2×2and3×3couplers,isdesigned.Basedonthephaseunwrappingalgorithm,thethree-wayasymmetricaloutputofthe3×3coupleranddemodulationstatecharacteristicsofthesystemwhenthevibrationsignalincludeshighharmonicwavesareanalyzedinsimulations.Theresultshowsthatwhenthethree-wayoutputisasymmetrical,themaximumdeviationofdemodulationsignalis1.625%,andwhenthevibrationsignalincludeshighharmonicwaves,themaximumdeviationofdemodulationsignalis0.9%.Thecorrespondingexperimentisconducted.Theexperimentalresultshowsthatthedynamicresolutionofthesystemis25.22nε/Hzwhenthevibrationpitchis5.5Hz.