A new structure of fiber Bragg grating with increased sensitivity to pressure and decreased sensitivity to temperature

S. Toroghi; Hamid Latifi; M. Afshari; Seyed. H. Aref

doi:10.1117/12.675061

9 June 2006 A new structure of fiber Bragg grating with increased sensitivity to pressure and decreased sensitivity to temperature

S. Toroghi, Hamid Latifi, M. Afshari, Seyed. H. Aref

Author Affiliations +

Proceedings Volume 6162, International Conference on Lasers, Applications, and Technologies 2005: Laser Sensing, Imaging, and Information Technologies; 61620Q (2006) https://doi.org/10.1117/12.675061
Event: International Conference on Lasers, Applications, and Technologies 2005, 2005, St. Petersburg, Russian Federation

Abstract

In this article, we propose a simple method to increase the pressure sensitivity of a typical fiber Bragg grating (FBG) while decreasing the temperature sensitivity. This method uses a typical FBG, which is coated with a thick layer of polymer with two symmetric air channels. By this method the pressure sensitivity can be increased (e.g. 1.1×10^-5 /MPa) while the temperature sensitivity is negligible (e.g. -0.174×10^-8/^oC) by proper selection of the geometrical parameters and material types of the sensor.

Citation Download Citation

S. Toroghi, Hamid Latifi, M. Afshari, and Seyed. H. Aref "A new structure of fiber Bragg grating with increased sensitivity to pressure and decreased sensitivity to temperature", Proc. SPIE 6162, International Conference on Lasers, Applications, and Technologies 2005: Laser Sensing, Imaging, and Information Technologies, 61620Q (9 June 2006); https://doi.org/10.1117/12.675061

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