文档介绍：科技论文
题目Optical munication technology, history and status of development
系别尚德光伏学院
专业应用电子技术(光电子技术方向)
班级 0901
学生姓名
学号 090281
指导教师
2012年4 月
Optical munication technology, history and status of development
Abstract:Optical munication line with the high-speed, large capacity, high security, etc., but the practical application of optical munications can transmit information in the human is not easy, their development has experienced many technical difficulties to solve these technical problems, optical munications can be further development.
This article from the light source and transmission medium, optoelectronic devices, optical munication systems to demonstrate the development of munication technology.
Key Words :Optical fiber cable optical munication technology active devices ponents munication System
【Body】
The inherent advantages of light it is destined to serve as human history, the role can not be ignored, with the development of human technology, its application more widely; the advantages are ing more prominent.
Optical munication is to send the image, and data to the optical carrier signal modulation to optical fiber as the transmission medium munication. As a carrier wave frequency is much higher than the radio frequency as the transmission medium off than coaxial cable or fiber-optic waveguide loss is much lower, so relative to munications or munications, optical munication has many unique advantages.
Highlight the advantages of real applications of optical munications to human life, and many technologies, requires a process of development.
First, the formation of optical munication technology
(A), the early munications
Light everywhere, this sentence is no exaggeration. Early in human development, human beings have begun to use light to transmit information, and there are many such examples.
Gestures are a form of munication, can not be in the dark. The transmission system during the day and the sun as light source, solar radia