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(上接第 0 9/10期 )2 光缆传输2 .1 光缆传输的优缺点及几种应用模式2 .1.1 光缆传输的优缺点(1)传输距离长现在单模光纤在波长 1.3μm或 1.5 5 μm光束的低损耗窗口 ,每千米衰减可做到 0 .2～ 0 .4dB ,是同轴电缆每千米损耗的 1%。因此 ,模拟光纤多路电视传输系统可实现 2
(On the first 0 9/10) 2 optical cable transmission 2.1 The advantages and disadvantages of optical cable transmission and several application modes 2.1.1 The advantages and disadvantages of optical cable transmission (1) long transmission distance Now single-mode optical fiber at a wavelength of 1.3μm or 1.5 The low loss window of 5 μm beam can achieve 0.2-2.0 dB per km attenuation, which is 1% of coaxial cable loss per km. Therefore, analog optical fiber transmission system can be achieved 2