日本三菱电机公司开发出实现小型、低成本光传输接收模式的内装波导透镜型半导体激光器.光纤通信是利用了光纤具有的低损耗、大容量特性、作为连结城市间或干线系统和大陆间的海底光缆被广泛采用.尽管电话局和一些办公楼及普通家庭间都采用金属电缆连接,但近年来,随着信息量的增加,金属电缆远远满足不了庞大的传输容量. Mitsubishi Electric Corporation of Japan has developed a built-in waveguide lens type semiconductor laser that achieves a small, low-cost optical transmission reception mode using low-loss, large-capacity characteristics of optical fibers as a submarine cable connecting cities or trunk systems to the mainland Is widely used.While the office and some common office buildings and metal cabling are used, but in recent years, as the amount of information increases, metal cable can not meet the huge transmission capacity.