人类已进入信息社会，广播、电视、电话、传真、互联网等等科技手段将世界各地的人们拉得更近了。在这些科技手段中，最令人注目的是光电子，因而出现了一个新兴的产业──光电子产业。它为人们提供激光器、探测器、VCD、传真机、复印机、光纤通信系统等等五光十色的产品，丰富 Humanity has entered the information society, and technological means such as radio, television, telephone, facsimile, the Internet and others have brought people all over the world closer together. Among these scientific and technological means, the most noticeable thing is optoelectronics, thus emerging a new industry ─ optoelectronics industry. It provides people with colorful products such as lasers, detectors, VCDs, fax machines, photocopiers, optical fiber communication systems, etc.