【全光3R再生关键技术的理论与实验研究】华颖.pdf

DissertationSubmittedinPartial Fulfillment of theRequirements for theDegreeof DoctorofPhilosophyinEngineering Research on theKeyTechnologiesfor All Optical 3R Regeneration Ph.D.Candidate:Hua Ying Major:ElectromagneticFields and MicrowaveTechnology Supervisor:Prof.ChenYongshi Co-Supervisor Prof.

华中科技大学博士学位论文摘要随着WDM信道数的增加和单通道速率的提高,光纤的非线性、群速度色散、偏振模色散、累积的EDFA噪声和各类串话等都会对信号造成严重损伤,使光信号的脉冲展宽、消光比和信噪比下降,时间抖动增加,从而限制了网络节点的级联能力,最终限制了系统和网络的传输速率和距离。2R(Re-amplifying,Re-shaping)再生可以减小信号的幅度噪声,改善信号的消光比,但是无法解决时间抖动的问题。全光3R再生(Re-amplifying,Re-shaping,andRe-timing)是解决上述所有问题的最有效方法。

华中科技大学博士学位论文 ABSTRACT As thenumber of wavelength channels and thebit-rate per channelincrease, transmission impairments associatedwith the large channel number and the high bit-rate becomeseriousin such systems.Theseimpairmentsincludenoiseandjitterinducedfrom amplified-spontaneous-emission(ASE),int