用声表面滤波器作光－光中继器的抽时钟电路  

A SAWF Filter as Clock-Recovering Circuit of the Optical Repeater

作　　者：汪开源[1] 唐洁影[1] 

机构地区：[1]东南大学电子工程系

出　　处：《光通信技术》1994年第3期238-241,共4页Optical Communication Technology

摘　　要：本文对影响３Ｒ光－光三次群光中继器的性能的主要因素抽时钟电路进行了分析研究，介绍了一种新型的声表面滤波器（ＳＡＷＦ）作为抽时钟电路的核心器件，实验由ＳＡＷＦ器件得到的时钟抖动较小，最大时钟抖动为０．３ｕｓ（４．５°），在９连“０”时，时钟性能无明显下降，并具有电路结构简单、调整方便、时钟频率准确等优点。In this paper, an impact of clock-recovering circuit on function of3R-optical repeater is studied. A new SAWF can be used as key device ofclock-recovering circuit. Experiments show that the jitter of clock edgerecovered by SAWF is relatively small, and its maxmum jitter is 0. 3us(4. 5°) The clock property isn' t declined obviously when input nine successive '0'codes. In addition, its circuit structure is simple, adjustment is easy andclock frelueney is accurate.

关 键 词：光中继器 抽时钟电路 声表面滤波器 光纤通信 

分 类 号：TN929.11[电子电信—通信与信息系统]