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在光纤传输系统中,影响光纤通信向高速度发展的两个主要因素是光纤的损耗和色散。由于EDFA光纤放大器的出现,基本解决了损耗的问题。因此,色散成为限制系统容量和传输距离的主要瓶颈。目前,色散主要通过外加色散补偿元件来克服。啁啾光纤光栅因其体积小、重量轻、成本低和灵活方便、介入损耗低、与光纤兼容性好、波长选择性好等特点而受到普遍的重视,成为研究的热点。啁啾光纤光栅色散补偿原理对于普通单模光纤(SMF),在1550nm处的典型色散值为17ps/nm·km,处于反常色散区,兰移分量较红移分量传播得快。信号在光纤中传输一定距离后… 相似文献
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Gain characteristics of a dual-pump fiber optical parametric amplifier with Raman effect 总被引:1,自引:0,他引:1 下载免费PDF全文
We investigate the pump-depleted model of a dual-pump fiber optical parametric amplifier(FOPA) with Raman effect.As bandwidth increases,the gain profile of the distorted FOPA would be impacted seriously.Under the widebands,especially when the pump separation is large,zero dispersion wavelength(ZDW) fluctuation is another factor which can not be neglected.Numerical simulations with these comprehensive factors are mainly analyzed to obtain their influence on gain characteristics.Saturated gain spectrum is also discussed in detail. 相似文献
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