Sensor interface

Details Sensor interface Sensor interface

2006-08-15

2006-08-15

Pyo, Kevin (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

C250S227160, C385S013000, C356S073100

Reexamination Certificate

active

07091472

ABSTRACT:
The sensor interface includes a sensor, an optical fiber, a Bragg grating disposed on the optical fiber, and an optoelectronic circuit. The sensor communicates with the Bragg grating such that the sensor imposes a strain on the Bragg grating that is a function of the parameter sensed. The optoelectronic circuit reads the sensor by interrogating the Bragg grating with a light pulse carried by the optical fiber and detecting the timing and/or frequency of the light reflected by the Bragg grating. The timing and/or frequency of the light reflected is a function of the strain imposed on the Bragg grating.

REFERENCES:
patent: 6677576 (2004-01-01), Kenny et al.
patent: 6751367 (2004-06-01), Moslehi et al.
patent: 2002/0196993 (2002-12-01), Schroeder
M. Wippich, K.L. Dessau, Tunable Lasers and Fiber-Bragg-Grating Sensors, The Industrial Physicist, p. 24, Jun./Jul. 2003, American Institute of Physics.
B.D. Johnson, Fiber Bragg Gratings Track Fatigue in Aircraft, Accent on Applications, May 2003, http://www.photonics.com/spectra/applications.
Eric Glauber, EE-566 Presentation, Topic: Fiber Bragg Gratings, Oct. 29, 2003, University of Buffalo Lecture.

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