简介:Thestructureofanintensitymodulationopticalfibersensorisintroduced.Theprincipleofthesensorwhichcandetectminordisplacementbyuseofminorcurveindarkgroundisdescribed.Complexexperimentshowsthatthemultimodeopticalfibernotonlyhastheabilitlyofdetectingthedisplacementoflessthan0.1nm,butalsoexhibitscharacteristicsofwidedynamicrangeandgoodlinearity.