Hydrostatic Pressure Sensor Based on Polymer Optical Fiber Multimode Interferometer
Valente, N.
; Bilro, L.
;
Oliveira, R.
IEEE Sensors Journal Vol. 23, Nº 12, pp. 12876 - 12880, June, 2023.
ISSN (print): 1530-437X
ISSN (online): 1558-1748
Scimago Journal Ranking: 1,08 (in 2023)
Digital Object Identifier: 10.1109/JSEN.2023.3272172
Abstract
In this work, we report for the first time, to the best of our knowledge, a hydrostatic pressure sensor based on a polymer optical fiber (POF) multimode interferometer (MMI). The sensor was constructed using a polymethylmethacrylate (PMMA) multimode POF sandwiched between two silica single-mode fibers (SMFs). The characterization of the sensor revealed a linear positive wavelength shift with a sensitivity of 58 pm/bar. The sensitivity of the POF-MMI was compared to that of a silica-based MMI, revealed to be 10× higher, allowing it to reach higher resolutions of 0.1 bar, considering a detection system resolution of 5 pm.
