Distributed Temperature and Curvature Sensing Based on Raman Scattering in Few-Mode Fiber

被引：4
|
作者：
Liu, Zhuyixiao [1 ,2 ]
Wu, Hao [1 ,2 ]
Du, Haoze [1 ,2 ]
Luo, Zhongyao [1 ,2 ]
Tang, Ming [1 ,2 ]
机构：
[1] Huazhong Univ Sci & Technol, Sch Opt & Elect Informat, Wuhan 430074, Peoples R China
[2] Huazhong Univ Sci & Technol, Wuhan Natl Lab Optoelect WNLO, Wuhan 430074, Peoples R China
来源：
IEEE SENSORS JOURNAL | 2022年 / 22卷 / 23期
基金：
中国国家自然科学基金;
关键词：
Distributed curvature sensing; distributed temperature sensing; Raman scattering; OPTICAL-FIBER; BRILLOUIN-SCATTERING; RECENT PROGRESS; SENSOR; STRAIN; LIGHT;
D O I：
10.1109/JSEN.2022.3213871
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 and experimentally demonstrate a distributed temperature and curvature sensing method based on spontaneous Raman backscattered lights in a few-mode optical fiber. A loop structure is used to demodulate the distributed temperature information using the Raman anti-Stokes (AS) scattering lights. And the fiber curvature is estimated by the loss of Raman Stokes (S) light. This system can measure temperature and curvature at the same position of the fiber simultaneously. The experimental results show that the temperature uncertainty and spatial resolution can reach up to 0.24 & DEG;C and 1.8 m on 6 km sensing fiber. Besides, the maximum measurement error is 0.11 cm within the curvature measurement range of 0.5-3 cm.
引用
收藏
页码：22620 / 22626
页数：7
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