A distributed strain and temperature sensor using spontaneous Brillouin backscatter

被引：0
|
作者：
Wang, YT [1 ]
Tao, Y [1 ]
Hou, PG [1 ]
Lv, ZY [1 ]
Ge, WQ [1 ]
机构：
[1] Yanshan Univ, Qinhuangdao 066004, Peoples R China
来源：
ICEMI 2005: CONFERENCE PROCEEDINGS OF THE SEVENTH INTERNATIONAL CONFERENCE ON ELECTRONIC MEASUREMENT & INSTRUMENTS, VOL 7 | 2005年
关键词：
Brillouin; optical fiber; Mach-Zehnder interferometer; strain; temperature;
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Distributed optic fiber has been an international study issue, because of its irreplaceable advantage embodied in measurement. In this paper, sensing mechanism based on Brillouin scattering distributed optic fiber is described, the influence of strain and temperature on Brillouin frequency-shift is analyzed, and a formula is given. Furthermore an optimum design scheme for Mach-Zehnder interferometer is introduced in this system, in signal detection, double-ended detection method is adopted to realize detection of intensity and frequency-shift of Brillouin scattering signal at the same time and to shorten measuring time of system, and dual-channel Mach-Zehnder interferometer is introduced to detect signal and to filter Rayleigh light. Contrast test is implemented and better experiment result is obtained.
引用
收藏
页码：60 / 63
页数：4
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