[1] Sur R, Sun K, Jeffries J B et al. Multi-species laser absorption sensors for in situ monitoring of syngas composition[J]. Applied Physics B, 115, 9-24(2014).

[2] Zheng C T, Ye W L, Li G L et al. Performance enhancement of a mid-infrared CH4 detection sensor by optimizing an asymmetric ellipsoid gas-cell and reducing voltage-fluctuation: theory, design and experiment[J]. Sensors and Actuators B: Chemical, 160, 389-398(2011).

[3] Li B, He Q X, Fu Y et al. Development of near infrared distributed feedback laser temperature control system for CO detection[J]. Acta Optica Sinica, 34, s214002(2014).

[4] Dang J M, Fu L, Yan Z H et al. A review of mixed gas detection system based on infrared spectroscopic technique[J]. Spectroscopy and Spectral Analysis, 34, 2851-2857(2014).

[5] He Q X, Zheng C T, Liu H F et al. A near-infrared acetylene detection system based on a 1.534 μm tunable diode laser and a miniature gas chamber[J]. Infrared Physics & Technology, 75, 93-99(2016).

[6] Chen K W, Zhang X W, Zhao Z Q et al. Big bore and extremely flexible mid-infrared hollow waveguide for gas absorption module[J]. Sensors and Actuators A: Physical, 285, 45-49(2019).

[7] Chen C, Dang J M, Huang J Q et al. DFB laser temperature control system with high stability and strong robustness[J]. Journal of Jilin University(Engineering and Technology Edition), 43, 1004-1010(2013).

[8] Peng W Y, Goldenstein C S, Spearrin M et al. Single-ended mid-infrared laser-absorption sensor for simultaneous in situ measurements of H2O, CO2, CO, and temperature in combustion flows[J]. Applied Optics, 55, 9347-9359(2016).

[9] Wilson D, Phair J W. Performance analysis of a novel pyroelectric device for non-dispersive infra-red CO2 detection[J]. IEEE Sensors Journal, 19, 6006-6011(2019).

[10] Wu T, Zhang H L, Kong W P et al. Simultaneous on-line measurement of exhaled carbon dioxide and water vapor based on 2.73 μm distributed feedback laser[J]. Acta Optica Sinica, 38, 1230001(2018).

[11] Jiang L J, Qiu X B, Zhou Q H et al. Compact acetylene detecting system based on tunable diode laser absorption spectroscopy[J]. Laser & Optoelectronics Progress, 55, 033002(2018).

[12] Liu Z W, Zheng C T. Chen, et al. ICL-based mid-infrared carbon dioxide sensor system for deep-sea natural gas hydrate exploration[J]. Optics Express, 27, 5598-5609(2019).

[13] Yu X, Gao Z L, Song N et al. Design and experiment of pocket infrared gas detector[J]. Acta Photonica Sinica, 43, 0104001(2014).

[14] Zheng C T, Ye W L, Huang J Q et al. Performance improvement of a near-infrared CH4 detection device using wavelet-denoising-assisted wavelength modulation technique[J]. Sensors and Actuators B: Chemical, 190, 249-258(2014).

[15] Li J S, Parchatka U, Fischer H. Development of field-deployable QCL sensor for simultaneous detection of ambient N2O and CO[J]. Sensors and Actuators B: Chemical, 182, 659-667(2013).

[16] Dang J M. Study on quantum cascade laser based detection system for carbon monoxide[D]. Changchun: Jilin University, 1-144(2016).

[17] Xie K H, Zhang X, Zhang X W et al. A slot microring sensor with feedback spiral waveguide for trace gas CH4 sensing in mid-infrared region[J]. Optoelectronics Letters, 15, 1-5(2019). http://www.opticsjournal.net/Articles/Abstract?aid=OJ190411000130PmSpVr

[18] Huang S H, Huang Y J, Chui H C. Trace methane sensor using mid-infrared light emitting diode in hollow-core fiber[J]. Sensors and Actuators B: Chemical, 282, 599-602(2019).

[19] Pi M Q, Zheng C T, Bi R et al. Design of a mid-infrared suspended chalcogenide/silica-on-silicon slot-waveguide spectroscopic gas sensor with enhanced light-gas interaction effect[J]. Sensors and Actuators B: Chemical, 297, 126732(2019).

[20] Asakawa T, Kanno N, Tonokura K. Diode laser detection of greenhouse gases in the near-infrared region by wavelength modulation spectroscopy: pressure dependence of the detection sensitivity[J]. Sensors, 10, 4686-4699(2010).

[21] Li C L, Shao L G, Jiang L J et al. Simultaneous measurements of CO and CO2 employing wavelength modulation spectroscopy using a signal averaging technique at 1.578 μm[J]. Applied Spectroscopy, 72, 1380-1387(2018).