High-temperature fiber Bragg grating sensors in microstructured fibers for harsh environment applications

Qingqing Wang; Charles M. Jewart; John Canning; Dan Grobnic; Stephen J. Mihailov; Kevin P. Chen

doi:10.1117/12.851778

23 April 2010 High-temperature fiber Bragg grating sensors in microstructured fibers for harsh environment applications

Qingqing Wang, Charles M. Jewart, John Canning, Dan Grobnic, Stephen J. Mihailov, Kevin P. Chen

Proceedings Volume 7677, Fiber Optic Sensors and Applications VII; 76770G (2010) https://doi.org/10.1117/12.851778
Event: SPIE Defense, Security, and Sensing, 2010, Orlando, Florida, United States

Abstract

In this paper, we present fiber Bragg grating pressure sensors written in twin-hole microstructured fibers for high temperature operation above 800 °C. A Ti: Sapphire ultrafast laser is used to inscribe type II grating in two-hole optical fibers. The fiber Bragg grating resonance wavelength shift and peak splits are studied as a function of external hydrostatic pressure from 15 psi to 2000 psi. The ultrafast laser inscribed grating pressure sensor shows stable and reproducible operation above 800 °C. This paper demonstrates highly multiplexible pressure sensor technology for high temperature environment.

Citation Download Citation

Qingqing Wang, Charles M. Jewart, John Canning, Dan Grobnic, Stephen J. Mihailov, and Kevin P. Chen "High-temperature fiber Bragg grating sensors in microstructured fibers for harsh environment applications", Proc. SPIE 7677, Fiber Optic Sensors and Applications VII, 76770G (23 April 2010); https://doi.org/10.1117/12.851778

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