Title :
Fibre-optical strain gauge
Author :
Johnson, Mark ; Ulrich, Roger
Author_Institution :
Max-Planck-Institut fÿr Festkörperforschung, Stuttgart, West Germany
Abstract :
The transit time of a circulating light pulse in a 10¿1000 m long multinode optical fibre is used to measure the absolute length of the fibre and also its length variations with a reproducibility of ± 0.2 mm. The arrangement represents a fibre-optical strain gauge for use on long arbitrarily shaped paths.
Keywords :
fibre optics; length measurement; strain gauges; circulating light pulse; fibre optical strain gauge; multimode optical fibre; transit time ranging technique;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19780289
