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光纤通信系统性能稳定可靠,通信质量高,信道极宽,适于传输高速率信息。日本富士通公司将于今年在我国建一条每一光纤通信速率为1.76Tb/s的光缆线路,约可通2500万个话路。通信话路多,每一话路的设备费用也就降低,以最近建成的中美直达光缆线路为例,就设备费来说,每一话路每分钟尚不到1分钱。由于有这些优点,所以光纤通信成为传输信息的主要手段,这种状况在相当长的时间内是不会改变的。 从市场需求来看,90年代因特网商用化以后,通信系统的通信容量几乎每年翻一番。去年10
The performance of optical fiber communication system is stable and reliable, the communication quality is high, the channel is extremely wide, suitable for transmitting high-speed information. Japan’s Fujitsu company will be building a fiber optic cable in our country this year, each fiber optic communication rate of 1.76Tb / s, about 25 million road. The number of communication channels is much lower, and the cost of equipment for each channel is also reduced. Taking the recently completed direct optical cable line in China and the United States as an example, for equipment costs, each channel is less than one cents per minute. Because of these advantages, optical fiber communication has become the primary means of transmitting information, a situation that will not change for a long time. In terms of market demand, the communication capacity of communications systems has doubled every year almost since the commercialization of the Internet in the 1990s. Last year 10