1. Bend measurement using Bragg gratings in multicore fibre
- Author
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William N. MacPherson, Roy McBride, Lin Zhang, James G. Burnett, M. J. Gander, Julian D. C. Jones, Alan H. Greenaway, Paul M. Blanchard, and Ian Bennion
- Subjects
PHOSFOS ,Optical fiber ,Materials science ,business.industry ,Physics::Optics ,Curvature ,Isothermal process ,law.invention ,Wavelength ,Optics ,Fiber Bragg grating ,law ,Physics::Atomic Physics ,Electrical and Electronic Engineering ,business ,Strain gauge - Abstract
The first measurements of curvature made using Bragg gratings written in separate cores of a multicore optical fibre are described. The gratings act as independent, but isothermal, strain gauges. The difference in Bragg wavelength between the gratings provides a temperature-independent measurement of the local curvature.
- Published
- 2000