Single uniform FBG for simultaneous measurement of liquid level and temperature

Shu, Xuewen, Sugden, Kate and Bennion, Ian (2010). Single uniform FBG for simultaneous measurement of liquid level and temperature. Measurement science and technology, 21 (9), 094003.

Abstract

In this paper, we propose and demonstrate a novel scheme for simultaneous measurement of liquid level and temperature based on a simple uniform fiber Bragg grating (FBG) by monitoring both the short-wavelength-loss peaks and its Bragg resonance. The liquid level can be measured from the amplitude changes of the short-wavelength-loss peaks, while temperature can be measured from the wavelength shift of the Bragg resonance. Both theoretical simulation results and experimental results are presented. Such a scheme has some advantages including robustness, simplicity, flexibility in choosing sensitivity and simultaneous temperature measurement capability.

Divisions: Engineering & Applied Sciences > Electrical, electronic & power engineering
Engineering & Applied Sciences
Uncontrolled Keywords: fiber optics sensors, fiber Bragg gratings, liquid-level sensor
Published Date: 2010-07-28
Authors: Shu, Xuewen
Sugden, Kate
Bennion, Ian

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