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6 October 1986 Fibre Optic Two Polarization Interferometer With Unambiguous Digital Readout And Its Application As Remote Strain Sensor
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Proceedings Volume 0630, Fibre Optics '86; (1986) https://doi.org/10.1117/12.963610
Event: Sira/Fibre Optics '86, 1986, London, United Kingdom
Abstract
For overcoming the ambiguity of fringe counting in fibre optic interferometers with remote readout two phase shifted (π/2) interference signals are produced employing the residual birefringence of non-ideal monomode fibres. A simple logic circuit determines the sign of the measurand change corresponding to the sign of the phase shift and feeds the counting pulses into an up-down counter. The method is tested by strain measurements with jacketed as well as bare sections of fibre employing a Mach-Zehnder setup.
© (1986) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Norbert Furstenau "Fibre Optic Two Polarization Interferometer With Unambiguous Digital Readout And Its Application As Remote Strain Sensor", Proc. SPIE 0630, Fibre Optics '86, (6 October 1986); https://doi.org/10.1117/12.963610
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