Title :
Accurate loop length determination in fibre-optic sensors and signal processors
Author :
Tur, Moshe ; Kim, Byoung Yoon ; Brooks, J.L. ; Shaw, H.J.
Author_Institution :
Tel-Aviv University, School of Engineering, Tel-Aviv, Israel
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 :
fibre optic sensors; length measurement; accurate determination of differential propagation delays; fibre-optic circuits; fibre-optic sensors; high resolution technique; high-order frequency filtering characteristics; loop length determination; signal processing arrays; time delays for two interferometers;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19860534
