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Volume 32 Issue 2
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Article Navigation >  Explosion And Shock Waves  > 2012  >  32(2): 179-184
LIU Qiao, LI Ze-ren. DispersionmeasurementofsignalopticalfibersinVISAR[J]. Explosion And Shock Waves, 2012, 32(2): 179-184. doi: 10.11883/1001-1455(2012)02-0179-06
Citation: LIU Qiao, LI Ze-ren. DispersionmeasurementofsignalopticalfibersinVISAR[J]. Explosion And Shock Waves, 2012, 32(2): 179-184. doi: 10.11883/1001-1455(2012)02-0179-06
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DispersionmeasurementofsignalopticalfibersinVISAR

doi: 10.11883/1001-1455(2012)02-0179-06
  • 1.

    InstituteofFluidPhysics,ChinaAcademyofEngineeringPhysics,

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  • Corresponding author: LIU Qiao
  • Publish Date: 2012-03-25
    Abstract
  • TomeasurethedispersionofthesignalopticalfibersinVISAR,asetupwasbuiltbasedon thetimedomainmethod.Thesetupismadeupofapicosecondlaser,afast-responsephotodetector andabroadbanddigitaloscilloscope,whichcanaffordthe3dBdurationoftheimpulseresponsefunctionbymeasuringtheopticalpulsedurationsinandoutthemeasuredfiber. Thissetupwasusedto characterizethedispersionpropertiesofa123-m-lengthgradientindexfiberanda10-m-lengthstepindexfiberatabout532nm, respectively.Theobtaineddispersiontimeofthegradientindexfiberis (68316)psandthecorrespondingfrequencyresponse3dBbandwidthisabout646MHz.Theseof thestepindexfiberare(163114)psand271MHz,respectively.Uncertaintyanalysisofthemeasuredresultswasperformed, andthemeasuredresultswerecomparedwiththetheoreticalcalculations. Itdisplaysthatthemeasuredresultsareconsistentwiththetheoreticalcalculations.Thebuilt setupcanaffordasimpleanddependabledispersiontimemeasurementforthesignalopticalfibersin VISARapplications,therebyitcanprovidereferenceforreasonablychoosingthetypeandlengthof thesignalopticalfibersinexperiments.
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