Improved-bonding linearly chirped fiber grating for a high-sensitivity surface-mounted strain sensor
Applied Optics, Vol. 49, Issue 17, pp. 3348-3356 (2010)
http://dx.doi.org/10.1364/AO.49.003348
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Abstract
For a competitive sensor, both the sensitivity enhancement and calibration convenience are important. However, for surface-mounted fiber grating strain sensors, researchers in previous studies have seldom addressed these two capabilities simultaneously. Using the coupled-mode theory, we calculated the voltage signals from the filtered spectral-power interrogation system for a fiber Bragg grating with a glued grating or with a glue-free grating subject to different strain fields. Under a grating zone (the targeted surface), a one-dimensional linearly varied strain field, described by both the parameters of the average strain and the strain gradient, was considered. Finally, a simple and easy formula is provided (the improved-bonding linearly chirped fiber grating) to achieve both the sensitivity enhancement and calibration convenience at the same time for the strain sensor.
© 2010 Optical Society of America
OCIS Codes
(060.2310) Fiber optics and optical communications : Fiber optics
(060.2330) Fiber optics and optical communications : Fiber optics communications
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(060.4510) Fiber optics and optical communications : Optical communications
(060.3735) Fiber optics and optical communications : Fiber Bragg gratings
ToC Category:
Fiber Optics and Optical Communications
History
Original Manuscript: February 25, 2010
Manuscript Accepted: April 26, 2010
Published: June 7, 2010
Citation
Gwo-Shyang Hwang, Ding-Wei Huang, and Chien-Ching Ma, "Improved-bonding linearly chirped fiber grating for a high-sensitivity surface-mounted strain sensor," Appl. Opt. 49, 3348-3356 (2010)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-49-17-3348
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