Remotely addressed optical fibre curvature sensor using multicore photonic crystal fibre
WN MacPherson, MJ Gander, R McBride… - Optics …, 2001 - Elsevier
WN MacPherson, MJ Gander, R McBride, JDC Jones, PM Blanchard, JG Burnett…
Optics Communications, 2001•ElsevierWe demonstrate an all-fibre curvature sensor that uses two-core photonic crystal fibre (PCF)
as the sensing element. The PCF acts as a two-beam interferometer in which phase
difference is a function of curvature in the plane containing the cores. A broadband source
illuminates both cores, and the spectrum at a single point in the far-field interferogram is
recorded. Applying a three-wavelength phase recovery algorithm to the data provides an
unambiguous measurement of the interferometer phase, and hence curvature.
as the sensing element. The PCF acts as a two-beam interferometer in which phase
difference is a function of curvature in the plane containing the cores. A broadband source
illuminates both cores, and the spectrum at a single point in the far-field interferogram is
recorded. Applying a three-wavelength phase recovery algorithm to the data provides an
unambiguous measurement of the interferometer phase, and hence curvature.
We demonstrate an all-fibre curvature sensor that uses two-core photonic crystal fibre (PCF) as the sensing element. The PCF acts as a two-beam interferometer in which phase difference is a function of curvature in the plane containing the cores. A broadband source illuminates both cores, and the spectrum at a single point in the far-field interferogram is recorded. Applying a three-wavelength phase recovery algorithm to the data provides an unambiguous measurement of the interferometer phase, and hence curvature.
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