1概述首先,让我们回顾一下光纤通信的发展历程。我国约3000年前的烽火台,古埃及的烽烟塔,到17世纪用望远镜观察不同颜色的烟表示不同的信息,再到后来信号灯的发明引发的“灯语”通信,现在还在使用的交通信号灯与船舶上的“旗语”……到1880年贝尔发明的“光电话”等,这些都具有光通信的表征。但不是今天所说的“光纤通信”。在1961年前后发明的红宝石激光器、氦-氖激光器、二氧化碳激光器以及传输介质玻璃纤维、塑料 1 Overview First, let us review the history of optical communications. About 3000 years ago, beacon towers in China and beacon towers in ancient Egypt saw different information with different colors of smoke using telescopes in the 17th century. Later, the “light language” communication triggered by the invention of signal lights was still in use The traffic lights on the ship and the “semaphore” ... ... to 1880 Bell invented “light phone ”, etc., which have the characteristics of optical communication. But it’s not what we call today “optical fiber communications.” Ruby laser, helium-neon laser, carbon dioxide laser and transmission medium fiberglass invented before and after 1961, plastic