Abstract
An optical fiber displacement sensor with a large measuring range for simultaneous displacement and temperature measurement is presented in this paper. We developed a specific transducer based on the piston and hydraumatic structure to realize a large displacement measurement, which combined the large measuring range and high precision into a single sensor system. The spectrum showed two reflection peaks used to compensate for cross-sensitivity in the displacement detection. This displacement sensor can linearly work in a large measuring displacement range greater than 45 mm with a high sensitivity of 0.036 nm/mm. The sensor we reported can be developed for real-time displacement monitoring in many industrial environments such as the mechanical shape or liquid level monitoring.
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Chen, S., Liu, Y., Liu, X. et al. Self-compensating displacement sensor based on hydramatic structured transducer and fiber Bragg grating. Photonic Sens 5, 351–356 (2015). https://doi.org/10.1007/s13320-015-0278-4
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DOI: https://doi.org/10.1007/s13320-015-0278-4