影响因子：3.51
发表刊物：IEEE SENSORS JOURNAL
刊物所在地：美国
关键字：Defect modes, Ge2Sb2Te5, guided mode resonance, infrared spectroscopic gas detection, mid-infrared optical filter
摘要：A theoretical demonstration of the multichannel midinfrared (MIR) optical filters is proposed, and even-numbered multichannel spectral transmission is obtained by adding 1-DGe2Sb2Te5 (GST) grating defect layers in a 1-D photonic crystal (1DPhC), which can be attributed to the excitations of defect modes (DMs) and guided mode resonance (GMR). Moreover, the channel numbers of the proposed optical filter can be designed by controlling the number of GST grating layers, and active tunability of the multichannel MIR optical filter can be realized by controlling the GST phase transition. In addition, two theoretically designed examples of optical filters for nondispersive infrared (NDIR) sensing are given for characteristic absorption wavelength acquisitions in single- (CO) and multicomponent (CH4, CH2O, CO2, and CO) gas detections.Our findingsmay have potential applications in infrared spectroscopic gas detection,material characterization, and biochemical sensing.
论文类型：期刊论文
学科门类：工学
一级学科：安全科学与工程
文献类型：J
卷号：23
期号：4
页面范围：3567-3572
是否译文：否
发表时间：2023-02-13
收录刊物：SCI