Accession Number : ADD017292

Title :   Fiber Grating-Based Sensing System with Interferometric Wavelength-Shift Detection.

Descriptive Note : Patent, Filed 4 Nov 92, patented 1 Nov 94,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Kersey, Alan D ; Berkoff, Timothy A

Report Date : 01 Nov 1994

Pagination or Media Count : 15

Abstract : This patent discloses a system for sensing a measurand field, the system comprising a source of broadband light, a sensor, an unbalanced optical interferometric apparatus, and a signal processor. The sensor produces an optical return signal having a wavelength functionally dependent on the measurand field. The interferometric apparatus produces an electrical interference output signal having a phase shift functionally dependent on the wavelength of the return signal, and the processor develops a processing signal indicative of the measurand field value. (MM)

Descriptors :   *OPTICAL INTERFEROMETERS, *OPTICAL DETECTORS, *PATENTS, SIGNAL PROCESSING, HIGH RESOLUTION, GRATINGS(SPECTRA), STRAIN GAGES, ELECTROMAGNETIC INTERFERENCE, LIGHT MODULATORS, PHASE SHIFT

Subject Categories : Optical Detection and Detectors
      Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE