Unambiguous sawtooth fringe counting for an active homodyne demodulated interferometric strain gauge

Norbert Fuerstenau; Walter Schmidt

doi:10.1117/12.185066

14 September 1994 Unambiguous sawtooth fringe counting for an active homodyne demodulated interferometric strain gauge

Norbert Fuerstenau, Walter Schmidt

Proceedings Volume 2360, Tenth International Conference on Optical Fibre Sensors; (1994) https://doi.org/10.1117/12.185066
Event: 10th Optical Fibre Sensors Conference, 1994, Glasgow, United Kingdom

Abstract

Feedback of the interference signal of an imbalanced Michelson interferometer to the driver of the semiconductor laser source gives rise to asymmetric, sawtooth like fringes under fiber strain which is utilized for elimination of the fringe counting ambiguity.

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Norbert Fuerstenau and Walter Schmidt "Unambiguous sawtooth fringe counting for an active homodyne demodulated interferometric strain gauge", Proc. SPIE 2360, Tenth International Conference on Optical Fibre Sensors, (14 September 1994); https://doi.org/10.1117/12.185066

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