光纤色散测量概述  

Chromatic dispersion measurement of optical fibers

作　　者：方伟[1] 马秀荣[1] 郭宏雷[2] 曹晔[1] 岳洋[2] 开桂云[2] 

机构地区：[1]天津理工大学光电信息与电子工程系 [2]南开大学现代光学研究所,天津300071

出　　处：《光通信技术》2006年第9期24-26,共3页Optical Communication Technology

基　　金：天津市自然基金重点项目(043800911)资助;教育部重点项目(206006)资助。

摘　　要：介绍了三种最为成熟的光纤色散测量方法:时延法、相移法和干涉法,并从色散测量原理、测量装置、适用范围以及优缺点等几方面进行了论述。时延法测量精度不高,目前较少采用;相移法测量精度高,但测量仪器价格昂贵,测量成本高;干涉法既能满足一定的测量精度要求(时间分辨率可达1ps),又控制了测量成本,是普遍采用的测量方法。With the continuous enhancement of transmission speed in fiber-optic communication systems, the measurement of chromatic dispersion in fibers increasingly becomes a focus of attention. This paper mainly introduces three of the most important approaches, which are utilized to take accurate measurements of chromatic dispersion, fi＇om the aspects ofprinciple, measurement setup, applicable field, advantages and disadvantages. These approaches include pulse delay method, phase-shift method and interferometric method. The pulse delay method is not accurate enough, so it is barely used now. Accurate measurements of chromatic dispersion can be taken using phase-shift method; however, the measurement cost is very high due to costly instruments involved. The interferometric method can meet the needs of accuracy to a certain extent and the temporal resolution can be better than lps. Also this method doesn＇t require costly instruments, so it is widely used at present.

关 键 词：时延量 色散参量 时延法 相移法 干涉法 

分 类 号：TN247[电子电信—物理电子学]