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High-temperature multiparameter sensor based on sapphire fiber Bragg gratings

Stephen J. Mihailov, Dan Grobnic, and Christopher W. Smelser

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Abstract

We present, for the first time to our knowledge, a dual strain/temperature sapphire fiber Bragg grating sensor. Temperature and strain coefficients of the grating are evaluated. By recording the blackbody radiation level above 650°C, wavelength shifts due to temperature can be decoupled from those due to strain.

© 2010 Optical Society of America

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