采用可调谐激光器提高光纤延迟线精度的研究  

Improvement on optical fiber delay lines precision based on tunable laser

作　　者：卿翔[1] 陈福深[1] 

机构地区：[1]电子科技大学宽带光纤传输与通信网技术教育部重点实验室,成都610054

出　　处：《激光技术》2007年第1期47-49,53,共4页Laser Technology

摘　　要：为了提高一种3b it可变光纤延迟线的延时精度,提出一种采用可调谐激光器作为系统光源的技术,利用光纤的材料色散特性即光纤的折射率随传输波长变化而改变的特点,来改变延时光纤中信号存储的时间,从而达到提高光纤延迟线延时精度的目的。仿真结果表明,采用该种技术的光纤延迟线系统,平均延时误差从4.1ps下降到了1.3ps,延时精度得到了显著提高。In order to improve the precision of a 3bit variable optical fiber delay line, a new technology using a tunable laser as the lighting source of the delay system is proposed based on the characteristics of optical fiber＇s material dispersion that the refraction index of optical fiber changes along with the difference of transmitting wavelength. At the same time, the period of optical signal storage in delay lines is also altered and the delay precision of optical fiber delay lines is improved. The simulation results indicate the mean delay error decreases from 4. lps to 1.3ps, and the delay precision of the 3bit optical fiber delay line is remarkably improved by using this new technology.

关 键 词：光数据存储 光纤延迟线 可调谐激光器 材料色散 延时精度 

分 类 号：TN929.11[电子电信—通信与信息系统]