Fiber optic interferometric strain sensing on composites using an active homodyne sawtooth fringe counting technique

Frank Schiffer; Norbert Fuerstenau; Walter Schmidt

doi:10.1117/12.221116

21 September 1995 Fiber optic interferometric strain sensing on composites using an active homodyne sawtooth fringe counting technique

Frank Schiffer, Norbert Fuerstenau, Walter Schmidt

Author Affiliations +

Proceedings Volume 2509, Smart Structures: Optical Instrumentation and Sensing Systems; (1995) https://doi.org/10.1117/12.221116
Event: European Symposium on Optics for Environmental and Public Safety, 1995, Munich, Germany

Abstract

A new active homodyne sawtooth fringe counting technique is described for eliminating the directional ambiguity in incremental readout of interferometric strain gauges. Results of quantitative strain measurements using unbalanced Michelson and capillary based instrinsic Fabry-Perot sensors agree reasonably well with the readout of a resistive strain gauge as well as with the theoretically predicted sensitivity.

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Frank Schiffer, Norbert Fuerstenau, and Walter Schmidt "Fiber optic interferometric strain sensing on composites using an active homodyne sawtooth fringe counting technique", Proc. SPIE 2509, Smart Structures: Optical Instrumentation and Sensing Systems, (21 September 1995); https://doi.org/10.1117/12.221116

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