双向自主控制的光纤双向信息传输系统

Optic-fiber Bidirectional Information Transmission System with Bilateral Power Supply Linkage Control Function

为学科研究示范需要 ,应用PFM - 5 0 1AV型发送与接收光端机以及单模光纤 ,研制了异地两点间广播级高质量视频与音频双向信息传输系统。为方便使用 ,利用光纤分路器 (分光比为 1∶3)将接收端光信号分为控制电源开关与提取视频、音频信息 2部分 ,并利用光信号反馈与门电路控制技术 ,实现了光纤双向信息传输系统开关控制的异地双向自主控制。

To set an example for the optic fiber communication teaching, an optic fiber bi directional information transmission system with bilateral power supply linkage control function is developed. In this system, an optical fiber branching device is employed in each optical transceiver, which splits the received optical signal into two parts: 3/4 for power supplies linkage control, 1/4 for extracting video and audio information. When local or far end equipment's power is on or off, another's is on or off automatically,too. Here,local and far end are exchangeable and equal.