OSNR monitoring method and apparatus for the optical networks
    2.
    发明授权
    OSNR monitoring method and apparatus for the optical networks 失效
    OSNR光网络监控方法和装置

    公开(公告)号:US07177541B2

    公开(公告)日:2007-02-13

    申请号:US10148438

    申请日:2001-11-09

    IPC分类号: H04B10/08

    CPC分类号: H04J14/02 H04B10/07953

    摘要: It is disclosed that a method and apparatus that automatically monitors each channel's optical signal-to-noise ration (OSNR) using optical filter and polarization extinction method in wavelength division multiplexing (WDM) scheme-based optical transmission systems. OSNR is simply measured using optical filter by comparing amplified spontaneous emission (ASE) over the signal band, of which bandwidth has changed, while leaving signal intensity intact, with that original signal and, OSNR measurement is allowable over a wider range of OSNR by minimizing the ratio of signal to ASE over the signal band using polarization extinction method.

    摘要翻译: 公开了一种在基于波分复用(WDM)方案的光传输系统中使用滤光器和偏振消光方法自动监视每个通道的光信噪比(OSNR)的方法和装置。 通过比较放大的自发发射(ASE)在带宽已经改变的信号频带上,同时保持信号强度完整的原始信号,并且通过最小化OSNR在更宽范围的OSNR中允许OSNR来简单地测量OSNR 信号与ASE之间的信号频带比采用极化消光法。