[1] [1] YU Xin, GAO Zong-li, SONG Nan, et al. Design and experiment of pocket infrared gas detector［J］. Acta Photonica Sinica, 2014, 43(1): 0104001.

[2] [2] TAN Q, ZHANG W, XUE C, et al. Design of mini-multi-gas monitoring system based on IR absorption［J］. Optics & Laser Technology, 2008, 40(5): 703-710.

[3] [3] ZHANG W, TAN Q, LIU J, et al. Two-channel IR gas sensor with two detectors based on LiTaO3 single-crystal wafer［J］. Optics & Laser Technology, 2010, 42(8): 1223-1228.

[4] [4] TAN S, LIU W, WANG L, et al. Mid-infrared distributed-feedback quantum cascade laser-based photoacoustic detection of trace methane gas［J］. Spectroscopy and Spectral Analysis, 2012, 32(5): 1251-1254.

[5] [5] ASAKAWA, TAKASHI, KANNO, et al. diode laser detection of greenhouse gases in the near-infrared region by wavelengthmodulation spectroscopy: pressure dependence of the detection sensitivity［J］. Sensors, 2010, 10(5): 4686-4699.

[6] [6] ZHA Shen-long, LIU Kun, TAN Tu, et al. Application of photoacoustic spectroscopy in multi-component gas concentration detection［J］. Acta Photonica Sinica, 2017, 46(6): 0612002.

[7] [7] YU X, LV R, SONG F,et al. Pocket-sized nondispersive infrared methane detection device using two-parameter temperature compensation［J］. Spectroscopy Letters, 2014, 47(1): 30-37.

[8] [8] SCHARF T, BRIAND D, BULER S, et al. Miniaturized Fourier transform spectrometer for gas detection in the MIR region［J］. Sensors and Actuators B, 2010, 147(1): 116-121.

[9] [9] PARK J, YI S. Temperature compensated NDIR CH4 gas sensor with focused beam structure［J］. Procedia Engineering, 2010, 5(1): 1248-1251.

[10] [10] DENZER W, HANCOCK G, ISLAM M, et al. Trace species detection in the near infrared using Fourier transform broadband cavity enhanced absorption spectroscopy: initial studies on potential breath analytes［J］. Analyst, 2011, 136(4): 801-806.

[11] [11] ZHU Z, XU Y, JIANG B. A one ppm NDIR methane gas sensor with single frequency filter denoising algorithm［J］.Sensors, 2012, 12(9): 12729-12740.

[12] [12] LI L, CAO F, WANG Y,et al. Design and characteristics of quantum cascade laser-based CO detection system［J］. Sensors and Actuators B, 2009, 142 (1): 33-38.

[13] [13] YE W, ZHENG C, YU X,et al. Design and performances of a mid-infrared CH4 detection device with novel three-channel-based LS-FTF self-adaptive denoising structure［J］. Sensors and Actuators B, 2011, 155 (1): 37-45.

[14] [14] ZHANG Y, GAO W, SONG Z, et al. Design of a novel gas sensor structure based on mid-infrared absorption spectrum［J］. Sensors and Actuators B, 2010, 147 (1) : 5-9.

[15] [15] ZHENG C, YE W, LI G, et al. Performance enhancement of a mid-infrared CH4 detection sensor by optimizing an asymmetric ellipsoid gas-cell and reducing voltage-uctuation: Theory, design and experiment［J］. Sensors and Actuators B, 2011, 160 (1): 389-398.

[16] [16] DONG M, ZHENG C, MIAO S,et al. Development and measurements of a mid-infrared multi-gas sensor system for CO, CO2 and CH4detection［J］. Sensors, 2017, 17(10): 2221-2222.

[17] [17] ZHENG C, YE W, SANCHEZ N, et al. Infrared dual-gas CH4/C2H6sensor using two continuous-wave interband cascade lasers［J］. IEEE Photonics Technology Letters, 2016, 28(21): 2351-2354.

[18] [18] DONG L, LI C, SANCHEZ N, et al. Compact CH4 sensor system based on a continuous-wave, low power consumption, room temperature interband cascade laser［J］. Applied Physics Letters, 2016, 108(1): 0111063.