NAND gate with quantum dot-semiconductor optical amplifiers-based Mach-Zehnder interferometer-中国期刊网

摘要 TheNANDoperationat250Gbit/sbasedonquantumdot-semiconductoropticalamplifiers(QD-SOAs)ismodeled.BysolvingtherateequationsofSOAsintheformofaMach-Zehnderinterferometer(MZI),theperformanceofNANDgateisnumericallyinvestigated.Themodeltakestheeffectsofampli?edspontaneousemission(ASE)andtheinputpulseenergyonthesystem'squalityfactorintoaccount.ResultsshowthatNANDgateinQD-SOA-MZIbasedstructureisfeasibleat250Gbit/swithaproperqualityfactor.Thedecreaseinqualityfactorispredictedforhighspontaneousemissionfactor(NSP).Foranidealamplifier(NSP=2),theQ-factoris17.8for30dBgain.

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NAND gate with quantum dot-semiconductor optical amplifiers-based Mach-Zehnder interferometer

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NAND gate with quantum dot-semiconductor optical amplifiers-based Mach-Zehnder interferometer

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