Masters Theses

Author

Tao Wei

Abstract

"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.

Advisor(s)

Xiao, Hai, Dr.

Committee Member(s)

Tsai, Hai-Lung
Watkins, Steve Eugene, 1960-

Department(s)

Electrical and Computer Engineering

Degree Name

M.S. in Electrical Engineering

Sponsor(s)

United States. Office of Naval Research
United States. Department of Energy

Publisher

Missouri University of Science and Technology

Publication Date

Spring 2008

Pagination

vii, 37 pages

Note about bibliography

Includes bibliographical references (pages 76-78).

Rights

© 2008 Tao Wei, All rights reserved.

Document Type

Thesis - Open Access

File Type

text

Language

English

Library of Congress Subject Headings

Carbon dioxide lasers -- Thermal properties
Chemical detectors
Fiber optics
Optical fiber detectors -- Thermal properties

Thesis Number

T 9354

Print OCLC #

307682731

Electronic OCLC #

216883920

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