A Multi-Channel Gas Sensor Using Fabry-Perot Interferometer-Based Infrared Spectrometer
공학 > 전기공학
( Ju Chan Choi ) , ( June Kyoo Lee ) , ( Seong Ho Kong )
센서학회지 2012년, 제21권 제6호, 402~407페이지(총6페이지)
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    We report a Fabry-Perot interferometer (FPI)-based multi-channel micro-spectrometer used for multi-gas measurement in the spectral range of 3-5 Im and its gas sensing performance. The fabricated infrared (IR) spectrometer consists of two parts: an FPI on the top side for selective IR filtering and a V2O5-based IR detector array on the bottom side for the detection of the filtered IR. Experimental results show that the FPI-based multi-channel gas sensor has reliability and selectivity for simultaneously detecting environmentally harmful gases such as CH4, CO2, N2O and CO in the spectral range of 3-5 Im. The fabricated FPI-based multi-channel gas sensor also demonstrated that a reliable and selective detection of gas concentrations ranging from 0 to 500 ppm is feasible. In addition, the electrical characteristics demonstrate a superior response performance in regards to the selectivity in the multi-target gases.
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