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Title: Strain and temperature sensors using multimode optical fiber Bragg gratings and correlation signal processing
Authors: Lim, J
Yang, QP
Jones, BE
Jackson, PR
Keywords: Bragg grating;Correlation;Hydraulic valve;Multimode;Optical fiber;Optically-powered;Strain;Temperature
Issue Date: 2002
Publisher: IEEE
Citation: IEEE Transactions on Instrumentation and Measurement 51(4): 622-627, Aug 2002
Abstract: Multimode fiber optic Bragg grating sensors for strain and temperature measurements using correlation signal processing methods have been developed. Two multimode Bragg grating sensors were fabricated in 62/125 m graded-index silica multimode fiber; the first sensor was produced by the holographic method and the second sensor by the phase mask technique. The sensors have signal reflectivity of approximately 35% at peak wavelengths of 835 nm and 859 nm, respectively. Strain testing of both sensors has been done from 0 to 1000 με and the temperature testing from 40 to 80°C. Strain and temperature sensitivity values are 0.55 pm/με and 6 pm/°C, respectively. The sensors are being applied in a power-by-light hydraulic valve monitoring system.
ISSN: 0018-9456
Appears in Collections:Advanced Manufacturing and Enterprise Engineering (AMEE)
Dept of Mechanical Aerospace and Civil Engineering Research Papers

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