Sensors & Transducers Journal
(ISSN 1726- 5479)
Vol. 77, Issue 3, March 2007, pp. 1032-1039
Mathematical Formulation for Strain and Pressure Mapping Fiber Bragg Grating Sensors
*Pandey N. K., Tripathi Anupam
Sensors and Materials Research Laboratory, Department of Physics,
University of Lucknow, U.P., Pin-226007, India
Received: 1 February 2007 / Accepted: 15 March 2007 / Published: 26 March 2007
Abstract: In this paper, we report theoretical investigation of fiber Bragg strain and pressure mapping sensor with a novel mathematical formulation. A second order differential equation has been established showing relation between spatial periodicity along length of the fiber and effective refractive index of fiber core. Solution of this equation shows that magnitude of strain or pressure may be predicted from central wavelength shift of Bragg wavelength in the returned Bragg signal.
Keywords: Fiber optic strain sensor, Pressure mapping, Fiber Bragg Gratings
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