Fiber-optic dynamic sensing modules and methods

US8280202B2 · kind B2 · utility

Assignee

• General Electric Company · US

Inventors

• Hua Xia · Niskayuna, US
• Kevin Thomas McCarthy · Troy, US
• Jeffrey Scott Goldmeer · Latham, US
• Ertan Yilmaz · Albany, US
• Ted Kreutz · Carlstadt, US
• Clayton Young · Schenectady, US
• Russell Stephen DeMuth · Berne, US
• Hunt Adams Sutherland · Saratoga Springs, US

Key dates

• Filing date: May 14, 2009
• Grant date: Oct 2, 2012
• Expiry date: Jul 13, 2030

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T29/49229
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A fiber-optic dynamic sensing module comprises a support member, a beam extending from the support member, and a pre-strained fiber Bragg grating sensor and a strain-free fiber Bragg grating sensor mounted on the beam. The pre-strained and strain-free fiber Bragg grating sensors each comprise a Bragg grating inscribed in a fiber. The Bragg grating of the pre-strained fiber Bragg grating sensor is packaged more tightly along a longitudinal direction of the beam than the Bragg grating of the strain-free fiber Bragg grating sensor.