"Long period fiber gratings (LPFG) have unique advantages such as small insertion loss, low retro-reflection, good sensory property and low cost fabrication. LPFGs have found many applications in optical fiber communications as well as in optical fiber sensors. Recently, high-performance LPFGs have been successfully fabricated by CO₂ laser irradiations. The unique thermal stability enables many potential sensing applications in high temperature environments. In this thesis...two chemical sensing applications of LPFG were demonstrated. In the first one, the ambient refractive index sensing ability of bare LPFG was examined. The experimental data showed a good agreement with the simulation results. In the second one, the Palladium coated LPFG was used to monitor the concentration of hydrogen gas at different temperatures ranging from 25°C to 200°C. The sensitivity, response time and repeatability have been tested"--Abstract, page iii.
Xiao, Hai, Dr.
Watkins, Steve Eugene, 1960-
Electrical and Computer Engineering
M.S. in Electrical Engineering
United States. Office of Naval Research
United States. Department of Energy
Missouri University of Science and Technology
vii, 37 pages
© 2008 Tao Wei, All rights reserved.
Thesis - Open Access
Library of Congress Subject Headings
Carbon dioxide lasers -- Thermal properties
Optical fiber detectors -- Thermal properties
Print OCLC #
Electronic OCLC #
Link to Catalog Recordhttp://laurel.lso.missouri.edu/record=b6632226~S5
Wei, Tao, "Fabrication of long-period fiber gratings by CO₂ laser irradiation for high temperature applications" (2008). Masters Theses. 6833.