Optical fiber grating sensor system and method comprising plural optical gratings having partially overlapping operating ranges

Patent metadata

Field	Value
Publication number	US-9239249-B2
Application number	US-201214347976-A
Country	US
Kind code	B2
Filing date	Sep 19, 2012
Priority date	Sep 30, 2011
Publication date	Jan 19, 2016
Grant date	Jan 19, 2016

Abstract

The present invention relates to an optical fiber for a fiber optic sensor, comprising a first optical grating adapted to operate over a first range of wavelengths; and at least one set of further gratings adapted to operate over a second range of wavelengths, each grating being adapted to operate over a portion of the second range; wherein, each grating within said set has an operating range that partially overlaps with at least one other such grating operating range. The invention also extends to a sensor system, and method, using such an optical fiber.

First claim

What is claimed is:

1. An optical fibre sensor system for measuring an operating condition at a plurality of locations, the sensor system comprising:
a sensor optical fibre;
a light source for inputting light into the sensor optical fibre;
a light detector for receiving light from the sensor optical fibre; and
a processor for outputting measurements of the operating condition corresponding to the plurality of locations based on light received at the light detector;
where…

Assignees

• Vestas Wind Sys As

Inventors

• Hjort Thomas
• Glavind Lars

Classifications

• G01M5/0016 Primary

  Physics · mapped topic

• G01D5/35387

  Physics · mapped topic

• G01D5/3537 Primary

  Physics · mapped topic

• G01D5/35341

  Physics · mapped topic

• G01K11/3206

  Physics · mapped topic