Effects of truncated Gaussian beam on the performance offFiber optical synthetic aperture system-中国期刊网

摘要 Inthefiberopticalsyntheticaperture(FOSA)system,thediffractionoftheGaussianbeamlimitedbytheapertureinexitpupilplaneoffibercollimatorisstudiedtheoretically,andtheaxialandtransverseirradiancedistributionsareobtained.Thepointspreadfunction(PSF)andmodulationtransferfunction(MTF)ofthetruncatedGaussianbeamarrayarecomputednumericallywithdifferenttruncationfactors.TheresultsshowthatthediffractionofthetruncatedGaussianbeamarrayagreeswiththeuniform-beamRayleighdiffractionwhenthetruncationfactorislessthan0.5,butlittlepoweristransmitted.ThePSFandMTFaredegraded,butmorepowercanbecontainedwhenthetruncationfactorislarger.Theselectionofthetruncationfactorisatrade-offbetweenthelossoftransmissionandthequalitiesofPSFandMTFinpracticalapplication.

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Effects of truncated Gaussian beam on the performance offFiber optical synthetic aperture system

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Effects of truncated Gaussian beam on the performance offFiber optical synthetic aperture system

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