Invention Grant
US08280248B2 Method and apparatus for loading, detecting, and monitoring channel-associated optical signals 有权
用于加载,检测和监视信道相关光信号的方法和装置

Method and apparatus for loading, detecting, and monitoring channel-associated optical signals
Abstract:
A method and apparatus for loading, detecting, and monitoring channel-associated signals are provided. Channel-associated signals are identified with spread spectrum codes in the electrical domain, and after being modulated to an optical service signal at respective loading points separately, the channel-associated identification signals are transmitted in the optical channel along with the optical signal. At any downstream detecting point, passing optical signals can be converted through photoelectric conversion, and the channel-associated identification signals are de-spread. By detecting the channel-associated signals, it is possible to learn about whether the upstream loading point work normally, whether the optical channel operates normally, etc., and thereby to find possible failures, solve problems, and monitor quality parameters of optical signals in real time, and improve reliability of the optical signal transmission.
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