Interferometric fibre displacement/strain sensor based on source coherence synthesis
- 29 March 1990
- journal article
- Published by Institution of Engineering and Technology (IET) in Electronics Letters
- Vol. 26 (7) , 452-453
- https://doi.org/10.1049/el:19900293
Abstract
A displacement sensing technique is described, based on the use of a laser source frequency modulated at a relatively high rate to induce visibility modulation in the ‘baseband’ interference signal derived from a two-beam interferometer. Feedback control of the laser modulation, to lock the visibility to a minimum, is demonstrated.Keywords
This publication has 1 reference indexed in Scilit:
- Dual-Wavelength Approach To Interferometric SensingPublished by SPIE-Intl Soc Optical Eng ,1987