28 September 2005 Multi-wavelength fiber optic displacement sensing
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Abstract
Imaging a single optical fiber onto a remote, reflective target using several wavelengths - while exploiting the chromatic dispersion of the imaging optics - can be used to sense displacements of the target. Light of each wavelength is back-reflected into the fiber at a unique target position. The basic principles of the method and the optical considerations to optimize its accuracy are described. Experimental demonstrations are presented, showing precisions of around 10-20 micrometers.
© (2005) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
E. Shafir, E. Shafir, G. Berkovic, G. Berkovic, } "Multi-wavelength fiber optic displacement sensing", Proc. SPIE 5952, Optical Fibers: Applications, 59520X (28 September 2005); doi: 10.1117/12.621043; https://doi.org/10.1117/12.621043
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