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Innovative Dual-Parameter Fiber Sensor Based on B-Shaped Configuration for Honey Quality Assurance
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DOI：10.1109/jsen.2026.3705528.png)
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Abstract
En 中文
Honey, as a sweetener and high-quality food material, is inevitably adulterated. In this article, we report the development of a dual-parameter optical fiber sensor based on a single-mode fiber (SMF) wrapped in a novel B-shaped configuration to detect honey adulteration for the first time, to the best of our knowledge. The B-shaped configuration comprises two loops that serve as Mach–Zehnder interferometers (MZIs), each producing an individual interference dip in the transmission spectrum. Thereby, its application for the detection of sucrose- and water-adulterated honey is presented in this work. A pure bee honey was adulterated with sucrose and DI water at various volume ratios. Upon adulteration of honey purity from 100% to 50% (by volume), the refractive index (RI) of the adulterated honey varies. So, the effective RI of the guiding modes of the B-shaped configuration varies. By monitoring the shift in sensing dips, sucrose and water levels can be detected. Experimental results reveal a strong linear correlation between the dip’s wavelength and the adulteration concentrations of sucrose and water, resulting in calibration curves with slopes (sensitivities) of −0.33171 and −0.67029 nm/%, respectively. This indicates that the proposed sensor can detect adulteration in pure honey and is a promising candidate for food quality assurance.
Keywords:
B-shaped fiber structure
cross-sensitivity immune
honey adulteration
Mach–Zehnder interferometer (MZI)
sucrose
water
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