Optical-fiber distributed temperature sensor:design and realization  

作　　者：MENG Ling JIANG Ming-shun SUI Qing-mei FENG De-jun 

机构地区：[1]School of Control Science and Engineering, Shandong University, Jinan 250061, China [2]Information Industry Promotion Agency, Shandong Province Information Office, Jinan 250000, China [3]School of Information Science and Engineering, Shandong University, Jinan 250100, China

出　　处：《Optoelectronics Letters》2008年第6期415-418,共4页光电子快报（英文版）

基　　金：Shandong Province Natural Science Foundation (No.Z2006G06);The Excellent Youth Scientist Award Foundation of Shandong Province (No.2006 BS 01001)

摘　　要：Through analyzing theoretically the temperature effect of the optical-fiber Raman backscattering,a distributed temperature sensor is designed based on the single-mode fiber. Demodulation methods of temperature transduction are compared,and then the demodulation method using the ratio of the anti-Stokes and the Stokes Raman backscattering intensity is adopted. Both the hardware composition and the software realization of the system are introduced in detail. The experiment shows that the distinguishing ability of the temperature and that of the space are 1℃ and 2m,respectively,and that the system response time is about 180 s with a sensing range of 5km and with a temperature measurement range of 0-100℃.

关 键 词：光纤分布 温度敏感度 信号传输 计算机技术 

分 类 号：TP212.14[自动化与计算机技术—检测技术与自动化装置]