Title :
Dual-mode optical-fibre interferometric sensor
Author :
McMillan, J.L. ; Robertson, S.C.
Author_Institution :
GEC Research Laboratories, Hirst Research Centre, Wembley, UK
Abstract :
The letter describes how a dual-mode optical fibre can be used as an interferometric temperature sensor either by fringe counting or, more importantly, by analysis of the change in chromatic transmission spectrum with temperature. Such a sensor has the geometric flexibility of an all-fibre interferometric sensor as well as the advantages of a wavelength modulating device, i.e. high accuracy, noise immunity, absolute measurement capability and no need for intensity calibration.
Keywords :
fibre optics; light interferometry; nonelectric sensing devices; temperature measurement; absolute measurement capability; chromatic transmission spectrum; dual-mode optical fibre; fibre optics; fringe counting; interferometric sensor; noise immunity; temperature sensor;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19840092
