基于窃窃廊模式的微瓶腔乙醇气体传感特性实验研究

2021 19th International Conference on Optical Communications and Networks (ICOCN) Pub Date : 2021-08-23 DOI:10.1109/ICOCN53177.2021.9563827

Mingyue Wang, Naisi Zhu, Xusheng Zhang, Ya‐nan Zhang

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摘要

本文主要研究了基于低语廊模式(WGM)的非绝热锥形光纤耦合二氧化硅微瓶谐振器的乙醇气体传感特性。主要研究内容为氧化石墨烯(GO)和聚二甲基硅氧烷(PDMS)包覆后二氧化硅微瓶谐振器的体折射率灵敏度和对乙醇气体的传感特性。实验结果表明，硅微瓶谐振器的体折射率灵敏度为21.14941nm/RIU。氧化石墨烯包覆的WGM二氧化硅微瓶谐振腔对乙醇气体的灵敏度约为1.55 pm/ppm。对于涂覆PDMS的二氧化硅微瓶谐振器传感器，当浓度在5.8ppm ~ 117ppm之间时，对乙醇气体的灵敏度约为13.13 pm/ppm;当浓度在117ppm ~ 204.25 ppm之间时，对乙醇气体的灵敏度约为1.44 pm/ppm。

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Experimental Research on Ethanol Gas Sensing Characteristics of Microbottle Resonator Based on Whispering Gallery Mode

This paper mainly studied the ethanol gas sensing characteristics of silica microbottle resonator coupled with non-adiabatic tapered fiber based on whispering gallery mode (WGM). The main research contents were the bulk refractive index sensitivity of silica microbottle resonator and the sensing characteristics of ethanol gas after being coated with graphene oxide (GO) and polydimethylsiloxane (PDMS), respectively. Experiments reveal that the bulk refractive index sensitivity of the silica microbottle resonator is 21.14941nm/RIU. The sensitivity of WGM silica microbottle resonator coated with GO to ethanol gas is about 1.55 pm/ppm. For the silica microbottle resonator sensor coated with PDMS, the sensitivity to ethanol gas is about 13.13 pm/ppm when the concentration is between 5.8ppm to 117ppm, and 1.44 pm/ppm when the concentration is between 117 ppm to 204.25 ppm.

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2021 19th International Conference on Optical Communications and Networks (ICOCN)

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