Volanthen, M., Geiger, H. and Dakin, J.P.
Time-division-multiplexed optical fibre strain-sensor using subcarrier interferometry
Electronics Letters, 31, (22), . (doi:10.1049/el:19951288).
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 contaming reflective discontinuities. Time gating selects the sensing section. A resolution better than 2Oµm over 5m lengths of fibre has been obtained.
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