Fiber-Optic Distributed Sensor Based on Hybrid Raman and Brillouin Scattering Employing Multiwavelength Fabry-Perot Lasers

被引：30
作者：
Bolognini, Gabriele [1 ]
Soto, Marcelo A. [1 ]
Di Pasquale, Fabrizio [1 ]
机构：
[1] Scuola Super Sant Anna, I-56124 Pisa, Italy
来源：
IEEE PHOTONICS TECHNOLOGY LETTERS | 2009年 / 21卷 / 20期
关键词：
Brillouin scattering; laser modes; optical fiber measurements; optical time-domain reflectometry (OTDR); TEMPERATURE;
D O I：
10.1109/LPT.2009.2028899
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：
We propose the use of standard multiwavelength Fabry-Perot (FP) lasers for distributed strain and temperature measurement in hybrid Raman-and Brillouin-based fiber-optic sensors. The multiple longitudinal modes of FP lasers allow for accurate spontaneous Raman scattering measurement and for simultaneous high-sensitivity coherent detection of the Brillouin frequency shift parameter for all longitudinal modes. Experimental results confirm great performance improvement in simultaneous strain and temperature measurement using a single optical fiber.
引用
收藏
页码：1523 / 1525
页数：3
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