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Fiber Bragg Grating Based Thermometry

Published

Author(s)

Zeeshan Ahmed, Bernard J. Filla, William F. Guthrie, John S. Quintavalle

Abstract

In recent years there has been considerable interest in developing photonic temperature sensors such as the Fiber Bragg gratings (FBG) as an alternative to resistance thermometry. In this study we examine the thermal response of FBGs over the temperature range of 233 K to 393 K. We demonstrate, in hermetically sealed dry Argon environment, FBG devices show a quadratic dependence on temperature with expanded uncertainties (k=2) of 500 mK. Our measurements indicate that the combined measurement uncertainty is dominated by uncertainty in determining peak center fitting and thermal hysteresis of polyimide coated fibers.
Citation
Measure: The Journal of Measurement Science
Volume
10

Keywords

fiber bragg grating, thermometry, photonics, temperature, sensor
Created October 1, 2015, Updated February 19, 2017