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

• Type: Article in International Scientific Journal
• Date: 2013

Authors

Ricardo M Silva (Author) Other; Layeghi, A (Author) Other; Zibaii, MI (Author) Other; Hamid Latifi (Author) Other; Jose Luis Santos (Author) FCUP; Antonio Barbosa L Lobo Ribeiro (Author) Other; Orlando Frazao (Author) FCUP

Journal

Title: IEEE Photonics Technology Letters

Vol. 25

Pages: 745-748

ISSN: 1041-1135

Publisher: IEEE

Indexing

ISI Web of Knowledge - 2 Citations

Scopus - 2 Citations

Scientific classification

FOS: Engineering and technology > Electrical engineering, Electronic engineering, Information engineering

Other information

Authenticus ID: P-005-1KA

DOI: 10.1109/lpt.2013.2248708

Abstract (EN): 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.

Language: English

Type (Professor's evaluation): Scientific