Accurate loop length determination in fibre-optic sensors and signal processors
- 17 July 1986
- journal article
- Published by Institution of Engineering and Technology (IET) in Electronics Letters
- Vol. 22 (15) , 778-780
- https://doi.org/10.1049/el:19860534
Abstract
A technique is demonstrated for the accurate determination of differential propagation delays in fibre-optic circuits commonly found in sensing and signal processing arrays, utilising the high-order frequency filtering characteristics of these circuits. Relative time delays for two interferometers can be easily compared to within less than 10 ppm.Keywords
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