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自20世纪90年代中叶以来,Internet业务量的爆炸式剧增,从Cable Modem到ADSL、FTTH等宽带接入网,均受到了应用波分复用(WDM)技术的光纤骨干网的高速、大容量化的有力支援。 回顾一下WDM技术的发展过程可知,在1996年,当通信系统在1条光纤上扩大容量10Gbps(相当于13万条电话线路)时,有两种方案:一种是应用时分复用(TDM)方式,但在技术、成本上都存在很大困难;另一种是应用在通信系统中比较成熟且已普及的
Since the mid-1990s, the explosive growth of Internet traffic from Cable Modem to ADSL, FTTH and other broadband access networks has been affected by the application of wavelength division multiplexing (WDM) optical fiber backbone high-speed, large Powerful support for capacity. Recalling the development of WDM technology, we can see that in 1996, when the communication system expanded the capacity of 10Gbps (equivalent to 130,000 telephone lines) on one optical fiber, there are two solutions: one is the application of time division multiplexing (TDM) Way, but there are great technical and cost difficulties; the other is used in the communication system is more mature and has been popular