光通信可追溯到１９世纪末．１８８０年电话发明家贝尔发明了一种利用大气中传播的光波作载波的光电话，传输距离是２１３ｍ．激光器问世后不久的１９６３年，有人用激光做大气光通信实验，未取得满意结果．１９６６年英籍华人高锟提出用光导纤维实现光通信的设想．１９７０年 Optical communications can be traced back to the late 19th century. In 1880, telephone inventor Bell invented a kind of optical telephone which utilizes the light waves propagating in the atmosphere as the carrier, the transmission distance is 213m. Shortly after the laser was introduced in 1963, some people used the laser to do the experiment of atmospheric and optical communication without satisfactory results. In 1966, Kao, a British-Chinese, put forward the idea of ​​using optical fiber to achieve optical communication. 1970