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Temperature and Strain Sensing in BOTDA Fiber Sensor by Utilizing Wavelength-Sweeping BGS

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Abstract

Instead of frequency-sweeping in the microwave domain, wavelength-sweeping is proposed for BGS measurement, based on which the decoded Brillouin wavelength shift exhibits sensing coefficients of 7.3°C/nm and 160µε/nm in standard SMF.

© 2017 Optical Society of America

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