1 August 1991 All-fiber pressure sensor up to 100 MPa
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A novel structure incorporating an all-fiber configuration for a fiber-optic sensor of high pressure up to at least 100 MPa is discussed. This configuration is based on the hydrostatic pressure-induced polarization coupling occurring in highly birefringent optical fibers, which the authors reported earlier. The application of two light launching systems--one based on a semiconductor laser diode pigtailed to a single-mode fiber, the other on a similar laser diode pigtailed to a highly birefringent fiber--is reviewed and analyzed. The paper discusses the principles on which the design is based; the construction, instrumentation, and operation of this sensor; and its performance under various conditions, including pressure and temperature coefficients of the output signal. Temperature desensitization procedure is briefly described, and the advantages of the sensor over a sensor utilizing bulk optical polarization controlling elements and a HeNe laser are analyzed.
© (1991) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Wojtek J. Bock, Wojtek J. Bock, Tomasz R. Wolinski, Tomasz R. Wolinski, Andrzej W. Domanski, Andrzej W. Domanski, "All-fiber pressure sensor up to 100 MPa", Proc. SPIE 1511, Fiber Optic Sensors: Engineering and Applications, (1 August 1991); doi: 10.1117/12.45998; https://doi.org/10.1117/12.45998

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