Dual wavelength interrogation sensor employing long-period grati

Details Dual wavelength interrogation sensor employing long-period grati Dual wavelength interrogation sensor employing long-period grati

1998-09-08

2000-06-13

Palmer, Phan T. H.

Optical waveguides

Optical waveguide sensor

385 28, 385 37, 25022714, G02B 600

Patent

active

060759070

ABSTRACT:
A sensor system based on Long Period Gratings (LPGs) and a dual-wavelength interrogation scheme for sensing changes in a physical parameter such as temperature or strain. The system comprises a dual-wavelength laser light source, an optical waveguide for propagating the light, a long-period grating disposed in the path of the light, and a detector and processor for correlating a change in resonance wavelength with a numerical value for the physical parameter sensed. Additionally, multiple sensor elements are easily multiplexed by either time-division techniques or optical time domain reflectometry.

REFERENCES:
patent: 5513913 (1996-05-01), Ball et al.
patent: 5641956 (1997-06-01), Vengsarkar et al.
patent: 5889901 (1999-03-01), Anderson et al.
patent: 5940556 (1999-08-01), Moslehi et al.
"Discrimination Between Strain and Temperature Effects Using Dual-Wavelength Fiber Grating Sensors," Elect. Lett. 30, p. 1085 (1994); M.G. Xu, J.-L. Archambault, L. Reekie, J.P. Dakin.
"Hybrid Fiber Bragg Grating/Long Period Fiber Grating Sensor for Strain Temperature Discrimination," IEEE Photo. Tech. Lett 8 (9) p. 1223 (1996) H. J. Patrick, G. M. Williams, A. D. Kersey, J. R. Pedrazzani and A. M. Vengsarkar.
"Simultaneous Strain and Temperature Measurement with Long-Period Gratings," Opt. Lett., vol. 22, No. 9, p. 648-650 (1997); V. Bhatia, D. Campbell, R. O. Claus.

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