测试技术学报Issue(3)：237-242,6.DOI:10.3969/j.issn.1671-7449.2014.03.010
基于新型相位载波调制解调技术的双 M-Z 光纤振动传感器
Fiber-Optic Dis-Tributed Disturbance Sensor Based on a Novel Phase Generation Carrier Technique
林文台 1娄淑琴 1梁生2
作者信息
- 1. 北京交通大学电子信息工程学院，北京100044
- 2. 北京交通大学物理系，北京100044
- 折叠
摘要
Abstract
It is found that the phase drift induced by slow time -varying fluctuation such as temperature variation causes the location errors of FDDS .A phase drift insensitive Mach-Zehnder interferometer (M-Z) based on fiber-optic distributed disturbance sensor (FDDS ) incorporating a novel phase generation carrier (PGC) technique is proposed and investigated .By means of a novel PGC technique ,a narrow band analog low pass filter is designed ,it solved the problem of facilitating the digital narrow band low pass filter in high speed A/D acquisition .Meanwhile ,a special demodulation signal was designed to demodulate higher-order harmon-ic ,compensated the time delay of the long optical fiber and enhanced the SNR .Finally low -frequency phase drift can be inhibited ,the location error be reduced and the location accuracy be enhanced .关键词
光纤传感器/振动传感/相位载波/相位漂移/定位误差Key words
optical sensors/disturbance measurement/phase generation carrier/phase drift/location error分类
信息技术与安全科学引用本文复制引用
林文台,娄淑琴,梁生..基于新型相位载波调制解调技术的双 M-Z 光纤振动传感器[J].测试技术学报,2014,(3):237-242,6.
