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Type: Artigo de periódico
Title: Strain-Temperature Discrimination Using Multimode Interference in Tapered Fiber
Author: Andre, RM
Biazoli, CR
Silva, SO
Marques, MB
Cordeiro, CMB
Frazao, O
Abstract: Tapering single-mode-multimode-single-mode structures to enhance sensitivity is proposed and experimentally demonstrated. 50-mm-long coreless multimode fiber sections are spliced between single-mode fibers (SMFs) and tapered. They are characterized in strain, and an increase in strain sensitivity is obtained with taper diameter reduction. Sensitivities as high as -23.69 pm/mu epsilon for the 15-mu m taper are attained. Temperature sensitivities also depend on taper diameter. A combination of two different diameter tapered SMF MMF-SMF structures, with cross-sensitivity to strain and temperature, is proposed as a sensing system for the simultaneous measurement of strain and temperature with resolutions of +/-5.6 mu epsilon and +/-1.6 degrees C, respectively. A good condition number of 3.16 is achieved with this sensing structure.
Subject: Multimode interference devices
optical fiber sensors
optical fiber tapers
strain and temperature measurement
Country: EUA
Editor: Ieee-inst Electrical Electronics Engineers Inc
Rights: fechado
Identifier DOI: 10.1109/LPT.2012.2230617
Date Issue: 2013
Appears in Collections:Unicamp - Artigos e Outros Documentos

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