英语翻译利用非线性薛定谔方程对飞秒脉冲在硅波导中的传输以及超连续谱的产生进行了研究,计算和分析了色散

发布时间:2021-02-20 11:39:11

英语翻译利用非线性薛定谔方程对飞秒脉冲在硅波导中的传输以及超连续谱的产生进行了研究,计算和分析了色散参量及非线性损耗在超连续谱的产生过程中的影响.结果表明,孤子分裂是飞秒脉冲在硅波导中产生超连续谱的主要机理.飞秒脉冲中心波长与波导零色散点的相对位置对超连续谱的产生有极大影响.当中心波长位于近零色散点的反常色散区时,孤子分裂现象最明显,谱宽远大于在零色散波长及正常色散处入射时的情况,并且达到稳定展宽

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On thefemtosecondpulse transmissionin silicon waveguidesandsupercontinuum generationare studiedby using the nonlinear Schrodinger equation,calculation andAnalysis on the influence ofprocessparameters andnonlineardispersionlossinsupercontinuumin. The results show that,the soliton splittingis the mainmechanism ofsupercontinuumin silicon waveguidesfemtosecond pulse.Greatinfluence ofrelative position offemtosecond pulsecentral wavelengthand waveguidezero dispersionpointon supercontinuum.When theanomalous dispersion region ofcenter wavelengthis locatednearthe zero dispersion,soliton splitthe most obviousphenomenon,spectrum widthis much larger thanthezero dispersion wavelengthandnormal dispersionat theincidencesituation,andreach steadybroadeningrequiredwaveguidethe length of the shortest.Secondly,the high order dispersionsizewill also affect thespectral broadening,threeorder dispersionabsolutevalue is small,can obtain largerbroadening.In addition,thetwo-photon absorption effectto bring a lot ofloss,limiting thespectral width,and with theinitial pulsepowerincreases gradually,broadeningsaturated.
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