Spatial Resolution Improvement of Distributed Optical Fiber Raman Temperature Sensor System by Using Amplitude Modification Algorithm

被引：6

作者：

Jin, Zhongxie ^{[1
]}

Zhu, Haipeng ^{[1
]}

机构：

[1] Chongqing Univ, Key Lab Optoelect Technol & Syst, Chongqing 630044, Peoples R China

来源：

ADVANCES IN OPTICS MANUFACTURE | 2013年 / 552卷

关键词：

Spatial resolution; DOFRTS; Modification algorithm; Low cost;

D O I：

10.4028/www.scientific.net/KEM.552.393

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Spatial resolution is an important parameter in distributed optical fiber Raman temperature sensor system (DOFRTS). In this paper, a 10 kilometers long DOFRTS with spatial resolution of about 6 meters is constructed. The spatial resolution is limited by electrical bandwidth of the photodetector circuit and the data acquisition part. The abrupt temperature changes along the fiber axis are treated as temporal pulse signals, and a linear amplitude coefficient modification algorithm is used to improve the spatial resolution. The experimental results show that the temperature amplitudes from 3 meters region to 6 meters can be modified accurately. Therefore, a DOFRTS of high spatial resolution but low system cost could be successfully constructed.

引用

页码：393 / 397

页数：5