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hvariationtoopticalpowerchange.Bymeasuringthewavelengthvariationandthepowerdifferenceoftwonearpeaksinthespectralresponseofthisconfiguration,simultaneousstrainandtemperaturemeasurementisobtained.Source:OpticsCommunicationsVolume282,Issue20,15October2016,Pages4077-4080
DispersioncharacteristicofhexagonalandsquarelatticechalcogenideAs2Se3glassphotoniccrystalfiber
Keywords:Dispersion,Improvedvectorialeffectiveindexmethod(IVEIM),Photoniccrystalfiber(PCF),Highlynon-linearglass
Abstract:Inthispaper,wereportachalcogenideAs2Se3glassphotoniccrystalfiber(PCF)fordispersionpensatingapplication.Wehaveusedtheimprovedfullyvectorialeffectiveindexmethod(IFVEIM)forparingthedispersionproperties(negativeandzerodispersion)andeffectiveareainhexagonalandsquarelatticeofAs2Se3glassPCFusingdifferentwavelengthwindows.Ithasbeendemonstratedthatduetotheirnegativedispersionparameterandnegativedispersionslopeinwavelengthrange1.2–2.5μm,bothlatticestructuresofAs2Se3glassPCFs,withpitch(Λ等于2μm),canbeusedasdispersionpensatingfibers.Further,designparametershavebeenobtainedtoachievezerodispersioninthesefibers.ItisalsoshownthatAs2Se3glassPCFprovidesmuchhighernegativedispersionparedtosilicaPCFofthesamestructure,inwavelengthrange1.25–1.6μmandhencesuchPCFhavehighpotentialtobeusedasadispersionpensatingfiberinopticalmunicationsystems.
Source:OpticsCommunications,InPress,CorrectedProof,Availableonline14December2016
Supercontinuumgenerationinvisibletomid-infraredregioninsquare-latticephotoniccrystalfibermadefromhighlynonlinearglasses
Keywords:Modalproperties,Square-latticephotoniccrystalfiber,Supercontinuumgeneration,Highlynonlinearglassmaterial
Abstract:Square-latticemicrostructuregeometryofphotoniccrystalfibersmadewithhighnonlinearitynon-silicaglasspositionmaterialaswellasfusedsilicaglassarestudiedhereformodalpropagation,dispersionanalysisandsupercontinuumgeneration.Ourinvestigationofnonlinearpropagationoflowthresholdpowerfemtosecondpulseaimsatgeneratingsupercontinuuminthenearandmidinfraredregionusingthesehighlynonlinearfibers.Weperformedaseriesofanalysesthroughvaryingparametersofsquare-latticegeometrytomapadesiredbroadbandwindow.Wealsodemonstrateapacthighpowerbroadbandsourceinvisibleregiongeneratedwithinfewcentimeterlengthofthefusedsilicasquare-latticemicrostructure.
Source:OpticsCommunicationsVolume282,Issue17,1September2016,Pages3448-3455
Dispersion-flattenedpolarization-maintainingphotoniccrystalfiberfornonlinearapplications
Keywords:Photoniccrystalfiber,Birefringence,Polarization-maintaining,Nonlinearity,Dispersion
Abstract:Inthispaper,weproposeanovelphotoniccrystalfiberdesigntoachievehighbirefringence,highnonlinearitywithaflatteneddispersionprofile.Theairholeswhichareembeddedinsilicaarearrangedintriangularlatticeconfiguration.Inthecoreregion,anairholeisintroducedasthecentraldefecttoflattenthedispersioncurve.TheshapeofthedefectairholeisdeliberatelydesignedellipticalsothathighbirefringenceinthePCFisobtainedforpolarization-maintainingpurpose.Thestructuralparametersarecarefullyselectedtooptimizetheopticalproperties.
Source:OpticsCommunicationsVolume282,Issue20,15October2016,Pages4072-4076
All-opticalcontinuouslytunabledelaywithahighlinear-chirp-ratefiberBragggratingbasedonfour-wavemixinginahighly-nonlinearphotoniccrystalfiber
Keywords:Four-wavemixing,Wavelengthconversion,Highlinear-chirp-ratefiberBragggrating,Highly-nonlinearphotoniccrystalfiber
Abstract:Aschemeforhi-fiall-opticalcontinuouslytunabledelayisproposed.Thesignalwavelengthisconvertedtoadesiredidlerwavelengthandconvertedbackafterbeingdelayedbyahighlinear-chirp-rate(HLCR)fiberBragggrating(FBG)basedonfour-wavemixing(FWM)inahighly-nonlinearphotoniccrystalfiber(HN-PCF).Inourexperiment,400ps(morethan8fullwidthofhalfmaximum,FWHM)tunabledelayisachievedfora10GHzclockpulsewithrelativepulsewidthbroadenratio(RPWBR)of2.08%.Thepowerpenaltyisonly0.3dBat109BERfora10Gb/s2311pseudorandombitsequence(PRBS)data.
Source:OpticsCommunicationsVolume282,Issue22,15November2016,Pages4366-4369
Broadbandcoherentanti-StokesRamanscatteringspectroscopyusingsolitonpulsetrainsfromaphotoniccrystalfiber
Keywords:Coherentanti-StokesRamanscattering,Pulsepropagationandtemporalsolitons,Pulseshaping,Nonlinearmicroscopy
Abstract:PulsetrainsoffundamentalsolitonpulseswithdifferentcenterwavelengthsanddelaytimesfromaphotoniccrystalfiberweregeneratedandusedasStokesopticalpulsesincoherentanti-StokesRamanscattering(CARS)spectroscopy.Thepulsetrainswerecreatedbyshapingopticalpulseswithapulseshaperandtheirwaveformsweremeasuredbyacross-correlationfrequency-resolvedopticalgatingmethod.Bytheuseofpulsetrains,thetimerequiredfo
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