16 May 2008 Strain sensor using phase measurement techniques in polymer optical fibers
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Proceedings Volume 7004, 19th International Conference on Optical Fibre Sensors; 70041N (2008); doi: 10.1117/12.785797
Event: 19th International Conference on Optical Fibre Sensors, 2008, Perth, WA, Australia
Abstract
POF elongation sensors have been proposed e.g. by [1] as a low-cost alternative to FBG (single mode fiber Bragg gratings) sensors targeting the lower sensitivity range. A recently recovered detection system known from laser distance meters turned out to be very sensitive while staying simple. The approach is based on measuring the phase shift of a sinusoidally modulated light signal guided in a POF under different tensions resulting in different transit times and thus different phase shifts.
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A. Bachmann, M. Luber, H. Poisel, O. Ziemann, "Strain sensor using phase measurement techniques in polymer optical fibers", Proc. SPIE 7004, 19th International Conference on Optical Fibre Sensors, 70041N (16 May 2008); doi: 10.1117/12.785797; https://doi.org/10.1117/12.785797
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KEYWORDS
Sensors

Phase only filters

Modulation

Phase shift keying

Polymer optical fibers

Phase measurement

Receivers

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