基于1394b和POF的光电转换实现

Implementation of IEEE-1394b in POF use

在短距离通信领域,针对空间小、节点多、电磁干扰强等环境中信息高速无干扰传输问题,本文提出一种基于IEEE-1394b协议的高速串行光总线的实现,完成了信息传输介质为塑料光纤时,带有光电转换电路的1394b转发器的设计。该设计能够有效降低光传输系统的成本,提高可靠性及可维护性。从PC端光总线系统网络拓扑图中显示的连接,可以看出本文设计的硬件电路满足应用系统的需求。由转发器、SMI接口塑料光纤及1394bPC节点组成的光传输系统可以高速实时传输视频及音频数据。

For high-speed info transmission without disturbance in circumstance of small-space, more-node, high electromagnetism disturbance problem in short distance communication area, this paper puts forwards a means of implementation of high-speed serial optical bus system based on IEEE-1394b protocol. 1394b repeater with photovoltaic conversion circuit is accomplished when the medium of optical bus system is plastic optical fiber （POF）. This design can reduce cost, improve reliability and maintainability when used in optical transmission system. From the network topology diagram of optical bus on PC, it can be concluded that the circuit designed meets the needs of practical applications. The optical transmission system is composing of 1394b repeater, POF that has SMI interface and 1394b PC node. Both video and audio information can be transmitted in this system at same time, and high-speed info transmission in short distance has been realized without any disturbance.