Interrogation Sensing Scheme Based on a Figure-of-Eight Fiber Loop Mirror

被引：3
作者：
Silva, Ricardo M. [1 ,2 ]
Layeghi, A. [3 ]
Zibaii, M. I. [3 ]
Latifi, Hamid [3 ]
Santos, Jose Luis [1 ]
Lobo Ribeiro, Antonio Barbosa [4 ]
Frazao, Orlando [2 ]
机构：
[1] Univ Porto, Dept Phys & Astron, Fac Sci, P-4169007 Oporto, Portugal
[2] INESC TEC Inst Engn Sistemas & Computadores Porto, P-4169007 Oporto, Portugal
[3] Shahid Beheshti Univ, Laser & Plasma Res Inst, Tehran 1983963113, Iran
[4] Univ Fernando Pessoa, Fac Heath Sci, P-4200150 Oporto, Portugal
来源：
IEEE PHOTONICS TECHNOLOGY LETTERS | 2013年 / 25卷 / 08期
关键词：
Fiber interferometer; figure-of-eight; highly-birefringent fiber; optical fiber sensor; strain sensor; SAGNAC INTERFEROMETER; TEMPERATURE SENSOR; STRAIN;
D O I：
10.1109/LPT.2013.2248708
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：
A fiber optic interrogation sensor scheme based on a "figure-of-eight" configuration created from a single directional 3 x 3 fiber optic coupler is proposed. Two loops are formed in each arm and one of them contains the sensing head and the other is used as reference signal. A theoretical study based on Jones matrix analysis of this fiber loop mirror combination is reported. The optical configuration is tested as an interrogation scheme for a fiber strain sensor where the spectral response arises from the combination of the reference signal modulated by the sensor signal. The strain sensor configuration shows a phase sensitivity of 6.7 +/- 4.38 x 10(-2) mrad/mu strain by linear regression.
引用
收藏
页码：745 / 748
页数：4
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