Range-resolved single-sideband optical fibre interferometry for quasi-distributed dynamic strain sensing

Thomas Kissinger; Thomas O. H. Charrett; Ralph P. Tatam

doi:10.1117/12.974933

7 November 2012 Range-resolved single-sideband optical fibre interferometry for quasi-distributed dynamic strain sensing

Thomas Kissinger, Thomas O. H. Charrett, Ralph P. Tatam

Author Affiliations +

Proceedings Volume 8421, OFS2012 22nd International Conference on Optical Fiber Sensors; 84218I (2012) https://doi.org/10.1117/12.974933
Event: OFS2012 22nd International Conference on Optical Fiber Sensor, 2012, Beijing, China

Abstract

A novel optical signal processing scheme for fibre sensors is proposed, which combines interferometric phase measurements with range multiplexing. The scheme is based on single-sideband signal processing and uses continuous-wave pseudo-random range encoding. The potential of the technique for cost-effective dynamic quasi-distributed strain sensing is explored by applying it to an array of fibre segments. In its current implementation dynamic strains in segments of 3.4 m gauge lengths can be measured with a resolution well below microstrains at a bandwidth of 100 kHz.

Citation Download Citation

Thomas Kissinger, Thomas O. H. Charrett, and Ralph P. Tatam "Range-resolved single-sideband optical fibre interferometry for quasi-distributed dynamic strain sensing", Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 84218I (7 November 2012); https://doi.org/10.1117/12.974933

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