A Study on Q-Factor of CCBG Sensors by Coupled Mode Theory
The innovative coaxial cable Bragg grating (CCBG) sensor not only achieves the attractive attributes of high resolution, remote operation and multiplexing capability, but also has the advantages of large strain capability and robustness to survive harsh conditions, suitable for structural health monitoring (SHM). The Q-factor of the resonances in CCBG is studied in this paper by coupled mode theory (CMT), to obtain a better understanding of the device physics. The relationships between geometrical parameters and the Q-factor are investigated quantitatively and closed-from expressions are obtained. Design guidelines are developed to improve the Q-factor and consequently improve the senor sensitivity and accuracy.
S. Wu et al., "A Study on Q-Factor of CCBG Sensors by Coupled Mode Theory," Proceedings of SPIE, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2012, vol. 8345, SPIE, Mar 2012.
The definitive version is available at http://dx.doi.org/10.1117/12.915755
SPIE Smart Structures + Nondestructive Evaluation and Health Monitoring (2012, Mar. 12-15, San Diego, CA)
Electrical and Computer Engineering
Keywords and Phrases
Coupled mode theory; Device physics; Geometrical parameters; High resolution; Large strains; Q-factors; Remote operation; Bragg gratings; Coaxial cables; Sensors; Q factor measurement; Coaxial cable Bragg grating (CCBG)
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Article - Conference proceedings
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