期刊
JOURNAL OF LIGHTWAVE TECHNOLOGY
卷 36, 期 10, 页码 2031-2036出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JLT.2018.2802917
关键词
Couplers; hybrid optical sensor; microfabrication; microsensors
资金
- National Science and Technology Major Projects [2017YFC1403803, 2017YFA0303700]
- National Natural Science Foundation of China [61535005, 61475069]
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.
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