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为了促进四次群(140兆比特/秒)以上的高速光纤通信早在我国实用化,我们利用国产器件成功地研制了一套《140兆比特/秒数字彩电光纤传输系统》(已获部级科技进步一等奖).本文介绍的是其中的关键技术之一——同步恢复技术.位同步恢复部件的电路原理图如图1所示.它是由窄脉冲形成电路,锁相环路及位同步脉冲形成电路组成.
In order to promote high-speed optical fiber communication of more than four quadrants (140 Mbit / s) as early as practical in our country, we successfully developed a set of “140 Mbit / s Digital Color TV Optical Fiber Transmission System” Technology Progress Award.) This article describes one of the key technologies - synchronous recovery technology. Bit synchronization recovery circuit schematic components shown in Figure 1. It is formed by the narrow pulse circuit, PLL and Bit synchronous pulse forming circuit.