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Updated: Jul 14, 2026
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Micro/Nano-scale Strain Distribution Measurement from Sampling Moiré Fringes
Published on: May 23, 2017
Sensing of multimode-fiber strain by a dynamic photorefractive hologram
Salvatore Di Girolamo1, Alexei A Kamshilin, Roman V Romashko
1Department of Physics, University of Kuopio, P. O. Box 1627, FIN-70211 Kuopio, Finland.
Optics Letters
|July 3, 2007
Abstract:
We present a strain sensor in which a multimode fiber is used as a sensitive element. High sensitivity to dynamic strains is achieved by means of vectorial wave mixing in a photorefractive CdTe:V crystal. It was found that the largest source of noise in our sensor is related to the instability of the polarization state of speckles emerging from the fiber. This noise is significantly diminished in fiber with a core of large diameter (550 microm).
