Fiber-Optic Fabry-Perot Sensor Based on Periodic Focusing Effect of Graded-Index Multimode Fibers

被引：36
作者：
Gong, Yuan [1 ]
Guo, Yu [1 ]
Rao, Yun-Jiang [1 ]
Zhao, Tian [1 ]
Wu, Yu [1 ]
机构：
[1] Univ Elect Sci & Technol China, Educ Minist China, Key Lab Opt Fiber Sensing & Commun, Chengdu 611731, Sichuan, Peoples R China
来源：
IEEE PHOTONICS TECHNOLOGY LETTERS | 2010年 / 22卷 / 23期
基金：
中国国家自然科学基金;
关键词：
Fabry-Perot; fiber-optic sensors; graded-index multimode fiber (GI-MMF); periodic focusing effect; REFRACTIVE-INDEX; TEMPERATURE; LASER; INTERFEROMETER; DESIGN;
D O I：
10.1109/LPT.2010.2082518
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：
In this letter, the periodic focusing effect of graded-index multimode fibers is used to improve the performance of fiber-optic Fabry-Perot (FFP) sensors. The maximum fringe contrast of the reflective spectrum of the FFP sensor in air is > 32 dB. By detecting the fringe contrast variation and wavelength shift of the reflective spectrum, such an FFP sensor is used to measure the refractive index and temperature with sensitivities of similar to 45.05 dB/RIU and 11.5 pm/degrees C, respectively. It is also verified by the experiment that the simultaneous measurement of refractive index and temperature can be realized.
引用
收藏
页码：1708 / 1710
页数：3
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