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

被引：2

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

页码：745 / 748

页数：4

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