An optical fiber sensor to accurately judge the level of a point is presented in this paper. Three fibers are used in the sensor, one as the source to emit infrared light, and the others as the differential inputs to
We present a fiber-optic liquid level sensor that is conducted by a combination of optical interferometry and lever principle. The sensing unit is a Mach–Zehnder
In this paper, we present a polymer optical fiber (POF) Bragg grating (FBG) to measure liquid level based on Archimides'' law of buoyancy. The sensor consists of polymer 3D-printed rods
Schematics of fiber optic liquid level sensor system based on a combination of optical interferometry and leverage principle. (a) Lever based
In addition, the fiber optic level sensor shows a stable and reproducible response over several cycles of 30 min duration at different liquid levels. The results demonstrate that this fiber optic
In this work, a novel optical fiber sensor capable of measuring both the liquid level and its refractive index is designed, manufactured and demonstrated through simulations and...
This work reports an optical fiber–based continuous liquid level sensor for cryogenic propellant mass gauging, which has significant advantages
A fiber optic liquid level sensor system comprising multiple multiplexed probes has been successfully demonstrated. Optical time domain reflectometer (OTDR) is the primary tool for installing and
Abstract An intensity-based fiber-optic liquid-level gauge for continuous measurement is described. The sensing principle is based on the total internal reflection of light within the fiber optic,
In this context, this paper presents three specific optical fiber sensor technologies that show considerable potential for liquid-level monitoring: the Mach-Zehnder and Fabry-Perot
A novel optical liquid level sensor based on polarization-maintaining fiber (PMF) modal interferometer with waist enlarge splicing is proposed. A leng
Abstract This paper presents a portable optical fiber sensor (OFS) design for continuous liquid level measurement, fabricated using two pieces of
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The optical fibre probe can be installed in a propellant tank with the same manner as currently used silicon diode liquid level sensing probe via only
An experimental study of the interaction between a Mylar® polymer film and a multimode fiber-optic is presented for the simultaneous fiber-optic detection of low-pressure and liquid levels.
A fiber-optic liquid level sensor based on multimode interference (MMI) effects is proposed and demonstrated. We show that MMI and self-image effects can be effectively applied for
This paper introduces a facile POF sensor to monitor the liquid level and the liquid/gas presence in a specific container by introducing a void in the POF''s path. Multiple readings were
A novel fiber-optic liquid level sensor based on a cross-correlation optical time-domain Fresnel reflection technology is proposed and demonstrated. By processing a single-mode fiber (SMF) to create
Design and construction of an optical fiber sensor for liquid level detection are reported. This sensor operates based on light intensity modulation,
Abstract: In this paper, a novel liquid level sensing system is proposed to enhance the capacity of the sensing system, as well as reduce the cost and increase the sensing accuracy. The proposed
Commercial accounting for petroleum products requires more precise measurements and more stable operation of the liquid level gauges set up for factory conditions and spark-explosion
Hydrostatic pressure measurement with optical sensors enables precise long-term monitoring of liquid levels. The sensors are extremely robust and stable, as well
The present study designed the dual-point liquid level measuring sensor using the polymer optical fiber (POF). The sensor measures the liquid level variation based on the optical power intensity variation.
This study introduces a cost-effective solution and sensor arrays for the multipoint liquid-level measuring sensor based on an intensity modulation
An optical fiber liquid level sensor based on two twisted polymer optical fibers twining around a racetrack column is demonstrated in this study.
Abstract This study presents a fiber optic liquid level sensor (FOLLS) by acquiring information from the amplitude of spectral fast Fourier transform (FFT) in a specified narrow
In this work, we theoretically proposed and experimentally demonstrated the integration of a Mach–Zehnder interferometer (MZI) based on
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