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New OTDR technique for monitoring the range of reflective markers

H.Geiger1, J.P.Dakin1, N.C.Eaton2, P.Chivers2

1. Optical Fibre Group, Department of Electronics & Computer Science, University of Southampton, UK
2. Westland Aerospace, East Cowes, UK

Abstract

A novel OTDR technique to accurately monitor the optical path length to multiple reflective markers is described. The method can monitor changes in optical path length of 40 ppm in a 1 sec measurement time and is suitable for multiplexed optical-fibre strain sensing over gauge lengths of several metres.


10th Optical Fibre Sensors Conference (OFS '94) Glasgow Scotland 11-13 Oct (1994) pp.150-153

Southampton ePrint id: 77135

 

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