Keywords and Phrases
Coaxial Cable Bragg Grating; Coaxial Cable Ring Resonator; Structure Health Monitoring
“Coaxial cable based devices, such as coaxial cable Bragg grating (CCBG), coiled coaxial cable resonator have been demonstrated for sensing applications to address the challenges faced by fiber optic sensors (e.g., large strain survivability, installation). Inspired by the fiber ring resonator (FRR), coaxial cable based ring resonator (CCRR) is reported in this thesis. The device mainly formed by a homemade coaxial cable Bragg grating (CCBG) pair based side coupler. Comparing to the commercial coupler, CCBG-SC improves the flexibility of the device for sensing applications. The coupling frequency of the CCBG-based coupler can be modified by changing the grating length and period of the CCBG, providing a more convenient method to realize critical coupling in the CCRR. Resonances were observed at discrete frequencies in transmission spectrum. A high Q-factor could be achieved by varying the length of the loop. The basic principles were investigated to understand the device physics. The S-parameter of CCBG was calculated using finite element method. Full wave electromagnetic software was employed to simulate and demonstrate the concept. S-parameters of CCRR is calculated by an estimated algorithm. The device was tested for its potentially large strain application. The temperature responses were also investigated to study the influence of their crosstalk. CCRR sensing system offers improvements of performance and largely reduces costs by minimizing the requirements for insulation”—Abstract, page iv.
Electrical and Computer Engineering
M.S. in Electrical Engineering
Missouri University of Science and Technology
ix, 33 pages
© 2018 Xiaotong Tang, All rights reserved.
Thesis - Open Access
Electronic OCLC #
Tang, Xiaotong, "Coaxial cable ring resonator based on pair sided coaxial cable Bragg grating coupler for sensing appllication" (2018). Masters Theses. 7847.