Ethanol Gas Sensor Based on a Hybrid Polymethyl Methacrylate–Silica Microfiber Coupler

Gas sensors have broad applications for either industrial process control or biological detection. We developed a versatile and compact optical hybrid coupler gas sensor composed of a polymethyl methacrylate microwire and a silica microfiber. The light propagating in the microfiber interacts with th...

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Bibliographic Details
Published in:Journal of lightwave technology 2018-05, Vol.36 (10), p.2031-2036
Main Authors: Li, Dan-ran, Wu, Guang-xing, Chen, Jin-hui, Yan, Shao-cheng, Liu, Zeng-yong, Xu, Fei, Lu, Yan-qing
Format: Article
Language:English
Subjects:
Biological activity
Couplers
Ethanol
Gas detectors
Gas sensors
hybrid optical sensor
microfabricat- ion
microsensors
Optical fiber sensors
Optical fibers
Polymethyl methacrylate
Refractivity
Sensitivity
Silicon compounds
Silicon dioxide
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Summary:Gas sensors have broad applications for either industrial process control or biological detection. We developed a versatile and compact optical hybrid coupler gas sensor composed of a polymethyl methacrylate microwire and a silica microfiber. The light propagating in the microfiber interacts with the polymer microwire. When the hybrid coupler is exposed to different concentrations of ethanol vapor, the refractive indices of the polymer and the surroundings are changed, resulting in shifts in the resonant wavelength. The experimental sensitivity for ethanol vapor is 0.65 pm/ppm.
ISSN:0733-8724
1558-2213
DOI:10.1109/JLT.2018.2802917