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一、前言光纤具有衰减小、频带宽、无感应、无串音等优异特性。由于光传输技术的显著进展,使这些优异特性得以有效发挥的很多光通信系统已陆续成为现实。现在,光通信系统不仅广泛用于公用通信网,而且亦广泛用于电力公司、铁路和高速公路的远距离数据传输和监视等。
First, the introduction Fiber has a small attenuation, frequency bandwidth, no induction, no crosstalk and other excellent features. Due to the significant advances in optical transmission technology, many optical communication systems that enable these excellent features to be effectively utilized have gradually become reality. Optical communication systems are now widely used not only for public communication networks but also for long-distance data transmission and monitoring of power companies, railways and highways.