Fiber optic sensor for nondestructive detection of microbial growth on a silk surface.
Appl Opt
; 61(15): 4463-4470, 2022 May 20.
Article
em En
| MEDLINE
| ID: mdl-36256285
ABSTRACT
To nondestructively detect the mold growth process on silk, a coaxial concave reflection conical fiber optic sensor was developed using conical quartz fibers, fiber connectors, fiber couplers, and a plastic fixator. We established a theoretical model of this sensor and studied the influence of its structural parameters on its sensitivity, characterized the morphology of Aspergillus niger, and detected its growth process on a silk surface. A linear relationship between the sensor's output signal and the mold height was found. The sensor sensitivity, maximum detection error, and low limit of detection were 2.4 E-5 AU/µm, 7.83%, and 10 µm, respectively.
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2022
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