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近年因特网的飞速发展,数据传输量将超过语音传输量,加上传输的多样化,从1999年到2005年,每年传输的业务量需增加数十亿千兆比特。如此高的信息爆涨量要求迅速提高通信容量或传输带宽。通常有三种解决方案;一是敷设新光缆或利用备用光纤建设新的通信系统,由于其成本昂贵而难于承受;二是提高现有时分复用(TDM)通信系统的传输速率,尽管10Gbps 光纤传输系统已经商用化,但要进一步提高
In recent years, the rapid development of the Internet, data transmission will exceed the voice transmission capacity, coupled with the diversification of transmission, from 1999 to 2005, the annual transmission of traffic increased by billions of gigabit. Such a high amount of information explosion requires rapid increase of communication capacity or transmission bandwidth. There are usually three solutions; one is laying new optical fiber cables or using spare optical fiber to build new communication systems, which are difficult to bear due to their high cost; the other is to improve the transmission rate of existing TDM communication systems. Although 10Gbps optical transmission System has been commercialized, but to further improve