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一、简述光复用技术 在光纤中传送的信号速率达到 2.488 Gbit/s量级后，为了满足市场对带宽的要求，如何进一步拓展系统的传输容量呢？可以考虑采用以下途径。 1．向更高比特率的时分复用（ TDM）发展 长期以来，不断地提高时分复用的比特率是增加信息传送容量的主要
First, a brief description of optical multiplexing technology in the optical fiber signal transmission rate reached 2.488 Gbit / s magnitude, in order to meet the market demand for bandwidth, how to further expand the system’s transmission capacity? Can consider the following ways. 1. To the development of higher bit-rate time division multiplexing (TDM) For a long time, continuously improve the bit-rate of time-division multiplexing is to increase the information transmission capacity of the main