Patent ID: 8891968
Filing Date: 2014-11-18
Classification: H04B

Abstract:
1. A method for monitoring a channel-associated optical signal, comprising: spectrum-spreading the channel-associated signal, by a loading point, with a spread spectrum code corresponding to the loading point, to obtain a channel-associated identification signal of the loading point; modulating a passing optical service signal, by the loading point, with the channel-associated identification signal, to obtain a modulated optical signal; splitting the optical signal from an upstream node, by a detecting point, and converting a split optical signal into an electric signal; de-spreading the electric signal, by the detecting point, with a spread spectrum code corresponding to the loading point to be monitored, to obtain the channel-associated signal of the loading point to be monitored corresponding to the spread spectrum code, wherein, de-spreading the electric signal comprises: de-multiplexing the electric signal, and de-spreading the de-multiplexed electric signals with spread spectrum code corresponding to a plurality of loading points respectively, to obtain channel-associated signals corresponding to the respective loading points.