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当前,在光通讯领域里广泛应用的通讯方式是TDMTime Divtsion Multiplexing:时分复用)。它是指利用同一个波长、在同一根光纤中按时间顺序依次、轮流地传送若干个数字信号序列的通讯方式。简而言之,是采用时间分割的方法,在一根光纤中传送多路信号。这种技术比较简单,也比较经济。但是当传输速率超过1000Mb/s时,光信号将产生失真,出现啁啾(Chirp)效应。为了克服这一缺点,美国首先采用了WDM(Wavelength Division Multiplexing:波分复用)方式。这种方式是在同一根光纤中同时传送若干个不同波长的
At present, the communication method widely used in the field of optical communication is TDMTime Divtsion Multiplexing: time division multiplexing. It refers to the use of the same wavelength, in the same fiber in chronological order, in turn transmit several digital signal sequence communication. In short, the use of time-division method, the transmission of multiple signals in a fiber. This technology is relatively simple, but also more economical. However, when the transmission rate exceeds 1000Mb / s, the optical signal will be distorted, resulting in a chirp effect. To overcome this shortcoming, the United States first adopted the WDM (Wavelength Division Multiplexing: WDM method). This method is to transmit several different wavelengths in the same fiber at the same time