Detection of Aflatoxin B1 in Food Based on SMF Taper Combined With Fiber Loop Ring Down Technique

In this paper, a fiber sensing system combined with fiber loop ring down (FLRD) technique to detect aflatoxin B 1 (AFB 1 ) in food is proposed. The single-mode fiber (SMF) taper was set as the sensor head, and the waist diameter of it was determined to be 17.1 μm by the refractive index (RI) measure...

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Published in:IEEE sensors journal 2020-03, Vol.20 (5), p.2446-2451
Main Authors: Chen, Wenwei, Zhao, Chunliu, Mao, Bangning, Chen, Huifang, Shen, Changyu
Format: Article
Language:English
Subjects:
Aflatoxin B
Aflatoxins
Couplers
Diameters
fiber loop ring down
fiber sensing
fiber taper
Fitting
Food
Light sources
Optical fiber couplers
Optical fiber sensors
Refractivity
Sensor systems
Sensors
Tapering
Variations
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creator Chen, Wenwei
Zhao, Chunliu
Mao, Bangning
Chen, Huifang
Shen, Changyu
description In this paper, a fiber sensing system combined with fiber loop ring down (FLRD) technique to detect aflatoxin B 1 (AFB 1 ) in food is proposed. The single-mode fiber (SMF) taper was set as the sensor head, and the waist diameter of it was determined to be 17.1 μm by the refractive index (RI) measurement experiments. When a light pulse enters and circulates in the fiber loop, it experiences a little loss each time as it passes through the sensor head. The ring-down time of the system would be altered by intensity loss near the sensor head, which is related to the concentration of the AFB 1 solution. The experimental results showed that the sensitivity of AFB 1 was -0.755 μ s/(μg/ml) in the concentration range of 0-5 μ g/ml with a precision of 0.016 μg/ml. Compared with other AFB 1 sensors, the system has the advantages of simple structure, low cost, fast response and insensitive to light source fluctuation.
doi_str_mv 10.1109/JSEN.2019.2950939
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subjects Aflatoxin B
Aflatoxins
Couplers
Diameters
fiber loop ring down
fiber sensing
fiber taper
Fitting
Food
Light sources
Optical fiber couplers
Optical fiber sensors
Refractivity
Sensor systems
Sensors
Tapering
Variations
title Detection of Aflatoxin B1 in Food Based on SMF Taper Combined With Fiber Loop Ring Down Technique
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