Title :
Time-division-multiplexed optical fibre strain-sensor using subcarrier interferometry
Author :
Volanthen, M. ; Geiger, H. ; Dakin, J.P.
Author_Institution :
Optoelectron. Res. Centre, Southampton Univ., UK
fDate :
10/26/1995 12:00:00 AM
Abstract :
A high-resolution quasi-distributed strain sensor employing subcarrier interferometry and time-division multiplexing is reported. The system tracks a null in the subcarrier frequency response of a fibre network containing reflective discontinuities. Time gating selects the sensing section. A resolution better than 20 μm over 5 m lengths of fibre has been obtained
Keywords :
fibre optic sensors; light interferometry; strain sensors; subcarrier multiplexing; time division multiplexing; 20 micron; 5 m; fibre network; frequency response; high-resolution quasi-distributed sensor; optical fibre strain-sensor; reflective discontinuities; subcarrier interferometry; time gating; time-division-multiplexing;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19951288
