Development of Low-Stress Double-Pass Filter Device for Methane and Ethane Flammable Gas Detection System
Source abstract
Abstract
To meet the needs of industrial and environmental monitoring of methane and ethane flammable gases, a low-stress filter device for detecting methane and ethane simultaneously is developed based on the absorption spectra of methane and ethane and the thin-film design theory. In order to improve the sensitivity of the detection system and reduce the influence of environmental noise, the information of methane and ethane gas is extracted simultaneously by using a filter with double bandpass and wide cut-off in the middle-infrared and far-infrared bands. The transmittance of the filter is 91.3%, 93.1%, and 93.02% at the wavelengths of 3.31 μm, 6.71 μm, and 7.67 μm, respectively. The cut-off depth in the cut-off interval is above OD3, which meets the system’s requirements.
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Research context
OpenAlex topics: Atmospheric and Environmental Gas Dynamics · Spectroscopy and Laser Applications · Air Quality Monitoring and Forecasting
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
College of Optoelectronic Engineering, Changchun University of Science and Technology, Changchun 130022, China
Zhongshan Institute of Changchun University of Science and Technology, Zhongshan 528437, China
Zhongshan Jilian Optoelectronic Technology Co., Ltd., Zhongshan 528436, China
References (21)
Show source-provided references
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