Liquid pressure sensing system based on distributed polarization crosstalk analysis in polarization maintaining fiber

Abstract

A novel quasi-distributed liquid pressure sensing system based on distributed polarization crosstalk analysis (DPXA) in polarization maintaining fiber (PMF) is proposed and demonstrated. We design a special structure of liquid pressure sensing units and invent a corresponding nonlinear calibration method. Five sensing units deployed on a sensing tape can effectively transform the liquid pressure into the transverse-force applied on the sensing PMF, and the induced polarization crosstalk can be measured and located by the DPXA system, so as to further establish the relationship between liquid pressure and crosstalk through the nonlinear calibration method. The liquid pressure sensing system has good sensitivity and high repeatability, and a maximal measurement relative error of 8.96% is measured for the five sensing units, which can be much improved by optimizing the packaging of sensing units. We believe our sensing system will find great applications in the field of engineering liquid pressure sensing.

References

[1] LaiC W, LoY L, et al.. Application of fiber Bragg grating level sensor and Fabry-Perot pressure sensor to simultaneous measurement of liquid level and specific gravity[J]. IEEE sensors journal, 2012, 12(4):827-831

[2] VeronicaM S, DanielL, AitorL A, et al.. Study of optical fiber sensors for cryogenic temperature measurements[J]. Sensors, 2017, 17(12):2773

[3] ChenX W, ZhangH X, JiaD G, et al.. Implementation of distributed polarization maintaining fiber polarization coupling pressure sensing system[J]. Chinese journal of lasers, 2010, 37(6): 1467-1472

[4] LuP, et al.. Distributed optical fiber sensing: review and perspective[J]. Applied physics reviews, 2019, 6(4):041302

[5] YuZ, YangJ, LinC, et al.. Distributed polarization measurement for fiber sensing coils: a review[J]. Journal of lightwave technology, 2020, 39(12): 3699-3710

[6] BadoM F, et al.. A review of recent distributed optical fiber sensors applications for civil engineering structural health monitoring[J]. Sensors, 2021, 21(5):1818

[7] GongH, SongH, ZhangS, et al.. An optical liquid level sensor based on polarization-maintaining fiber modal interferometer[J]. Sensors and actuators A: physical, 2014, 205: 204-207

[8] VillalbaS, CasasJ R. Application of optical fiber distributed sensing to health monitoring of concrete structures[J]. Mechanical systems and signal processing, 2013, 39(1–2):441-451

[9] AhmadH, ChongW Y, et al.. High sensitivity fiber Bragg grating pressure sensor using thin metal diaphragm[J]. IEEE sensors journal, 2009, 9(12):1654-1659

[10] SchenatoL, AneeshR, PalmieriL, et al.. Fiber optic sensor for hydrostatic pressure and temperature measurement in riverbanks monitoring[J]. Optics & laser technology, 2016, 82: 57-62

[11] SchenatoL, PasutoA, GaltarossaA, et al.. An optical fiber distributed pressure sensing cable with pa-sensitivity and enhanced spatial resolution[J]. IEEE sensors journal, 2020, 34(12):5900-5908

[12] LiZ, YaoX S, ChenX, et al.. Complete characterization of polarization-maintaining fibers using distributed polarization analysis[J]. Journal of lightwave technology, 2014, 33(2):372-380

[13] ZhangZ, FengT, LiZ, et al.. Experimental study of transversal-stress-induced polarization crosstalk behaviors in polarization maintaining fibers[C], 2019, Bellingham, SPIE: 112-118

[14] LiZ H, SteneY, et al.. Research on influence of polarization crosstalk on the zero drift and random walk of fiber optic gyroscope[J]. Acta optica sinica, 2014, 34(12):14-24

[15] FengT, DingD, LiZ, et al.. First quantitative determination of birefringence variations induced by axial-strain in polarization maintaining fibers[J]. Journal of lightwave technology, 2017, 35(22):4937-4942

[16] DingZ, MengZ, YaoX S, et al.. Accurate method for measuring the thermal coefficient of group birefringence of polarization-maintaining fibers[J]. Optics letters, 2011, 36(11):2173-2175

[17] ChuaT H, ChenC L. Fiber polarimetric stress sensors[J]. Applied optics, 1989, 28(15):3158-3165

[18] TangF, JingW C, ZhangY M, et al.. Measurement of distributed mode coupling in high birefringence polarization-maintaining fiber with random polarization modes exited[C], 2006, Bellingham, SPIE: 165-174