Dissertation/Thesis Abstract

Effect of strain or stress applied using Fiber Bragg Grating sensor with the analysis of apodization on the performance of the sensor
by Shankar, Shilpa, M.S., California State University, Long Beach, 2015, 39; 1604885
Abstract (Summary)

This project is aimed at designing and optimizing the performance of a Fiber Bragg Grating strain sensor using different apodization profiles. FBG sensors are based on the principle that the Bragg wavelength changes with the change in grating period, length, and reflectivity. Hence, any physical parameter like stress, strain, pressure and temperature that causes a shift in the Bragg wavelength can be measured using an FBG. Ideally to use an FBG in strain sensing applications, it should have high reflectivity, low sidelobe levels and narrow full-width half maximum (FWHM). Based on this theory, an investigation of different apodization profiles on evaluation parameters such as reflectivity, sidelobes, and FWHM is performed. Blackman profile is found to be the best apodization profile, which can be used in sensing applications with the maximum reflectivity of 99.43%, minimum sidelobe levels, and narrow FWHM.

Indexing (document details)
Advisor: Chang, Chin
Commitee: Arry, James, Wang, Fei
School: California State University, Long Beach
Department: Electrical Engineering
School Location: United States -- California
Source: MAI 55/02M(E), Masters Abstracts International
Subjects: Engineering
Publication Number: 1604885
ISBN: 978-1-339-29292-2
Copyright © 2021 ProQuest LLC. All rights reserved. Terms and Conditions Privacy Policy Cookie Policy