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２０年来，光纤技术的发展在当今信息时代起到了举足轻重的作用，而光波波分复用多路光纤传输系统则是光纤通信新技术领域中重要的一部分。利用现代城市电信部门的光纤通信手段，应用光波波分复用新技术，建设城市的电视监控和报警系统，实践证明是可行的。１波分复用原理光波
In the past 20 years, the development of optical fiber technology has played a decisive role in today’s information age. Optical wavelength division multiplexing optical fiber transmission systems are an important part of new optical fiber communication technologies. The use of modern city telecommunications sector of optical fiber communication means, the application of optical wavelength division multiplexing technology to build the city’s television monitoring and alarm system, the practice proved feasible. 1 wavelength division multiplexing principle of light waves