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Time-division-multiplexed optical fibre strain-sensor using subcarrier interferometry

By M. Volanthen, H. Geiger and J.P. Dakin


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

Topics: QC, TK
Year: 1995
OAI identifier:
Provided by: e-Prints Soton

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