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Interrogation of a fibre Fabry-Perot interferometer using a pi-shifted Bragg grating

Title
Interrogation of a fibre Fabry-Perot interferometer using a pi-shifted Bragg grating
Type
Article in International Scientific Journal
Year
2008
Authors
Silva, SFO
(Author)
Other
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Frazao, O
(Author)
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Ferreira, LA
(Author)
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Araujo, FM
(Author)
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Santos, JL
(Author)
FCUP
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Journal
Vol. 19
Final page: 085302
ISSN: 0957-0233
Scientific classification
FOS: Engineering and technology > Other engineering and technologies
Other information
Authenticus ID: P-003-XGQ
Abstract (EN): A robust all-fibre interferometric interrogation technique based on the wavelength modulation of a pi-shifted fibre Bragg grating is proposed. The concept is demonstrated for strain measurement using a Bragg-grating-based Fabry-Perot interferometer. The strain-phase relationship is shown to be linear with a sensitivity slope of (2.19 +/- 0.02)degrees/mu epsilon. A strain resolution of approximate to 2.4 mu e is demonstrated.
Language: English
Type (Professor's evaluation): Scientific
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