9 February 1993 Optical pressure sensor using a low-coherence light source with a highly birefringent fiber
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Proceedings Volume 1712, 14th Symposium on Photonic Measurement; (1993) https://doi.org/10.1117/12.140167
Event: 14th Symposium of the TC2 on Photonic Measurements, 1992, Sopron, Hungary
Abstract
A polarimetric interferometric based pressure sensor, using a photoelastic material as a sensing element is demonstrated. The light source used was a multimode laser diode, coupled into the system through a highly birefringent fiber to provide a reference bias signal. The arrangement of the sensor system produces birefringence in the sensing element, and a Michelson interferometer to which the light then passes is used for signal processing. The path difference induced by the pressure was measured by re-establishing the interference condition in this Michelson interferometer. The pressure to be measured was applied by placing a calibrated mass on the sensing element. Results are presented showing the potential of such a system for pressure sensor applications.
© (1993) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Preecha P. Yupapin, Kenneth Weir, Kenneth T. V. Grattan, Andrew W. Palmer, "Optical pressure sensor using a low-coherence light source with a highly birefringent fiber", Proc. SPIE 1712, 14th Symposium on Photonic Measurement, (9 February 1993); doi: 10.1117/12.140167; https://doi.org/10.1117/12.140167
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