Composite Integral Response Sensing
Abstract
This document describes the investigation of a new concept for measurement of distributed strain. Implementation of the technique utilizes a fiber optic device with twin, coupled cores, a single input and a single output. Multiple wavelength operation of the sensor yields a diagnosis of the waveguide coupling perturbations imposed by mechanical disturbances. A general theory for the device has been derived in the form of an integral equation that relates the sensor core contrast to an arbitrary bending strain or curvature. In many cases of interest the curvature is small and slowly varying. For these conditions theory shows the core crosstalk spectrum is directly related to the Fourier transform of the strain distribution on a cantilevered beam.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1985
- Accession Number
- ADA163136
Entities
People
- G. Meltz
- J. R. Dunphy
- R. M. Elkow
Organizations
- United Technologies Corporation