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- Title
An intensity modulated fiber-optic carbon monoxide sensor based on Ag/Co-MOF in-situ coated thin-core fiber.
- Authors
Wang, Lian; Zhou, Juncheng; Chen, Yuhao; Xiao, Liu; Huang, Guojia; Huang, Xinyue; Yang, Xiaozhan
- Abstract
An intensity modulated fiber-optic carbon monoxide (CO) sensor by integrating in-situ solvothermal-growth Ag/Co-MOF sensing film is fabricated and evaluated. The Michelson interference sensing structure is composed of single-mode fiber (SMF), enlarged taper, thin-core fiber (TCF), and Ag film as the reflector. Ag/Co-MOF was coated on the cladding of the TCF as the sensing material, and the enlarged taper is located between TCF and SMF as the coupler. The structure, morphology, compositions and thermal stability of the Ag/Co-MOF sensing film were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), thermogravimetric analysis (TGA), etc. The sensitivity of the sensor is 0.04515 dB/ppm, and the fitting parameter of the CO concentration is 0.99876. In addition, the sensor has the advantages of good selectivity, good signal and temperature stability, and it has potential application in trace CO detection.
- Subjects
CARBON monoxide detectors; X-ray photoelectron spectroscopy; PLASTIC optical fibers; SINGLE-mode optical fibers; TRANSMISSION electron microscopy; CARBON monoxide
- Publication
Zeitschrift für Naturforschung Section A: A Journal of Physical Sciences, 2021, Vol 76, Issue 10, p881
- ISSN
0932-0784
- Publication type
Article
- DOI
10.1515/zna-2021-0168