[1] [1] WANG Zhuo, CAO Jia-nian, ZHANG Ke-ke, et al. Optical low-concentration methane gas sensor［J］. Acta Photonica Sinica, 2011, 40(2): 255-258.

[2] [2] LIU Xiao-hui, WANG Chang, LIU Tong-yu, et al. Fiber grating water pressure sensor and system for mine［J］. Acta Photonica Sinica, 2009, 38(1): 112-114.

[3] [3] CULSHAW B, STEWART G, DONG F, et al. Fibre optic techniques for remote spectroscopic methane detection-from concept to system realization［J］. Sensors and Actuators B, 1998, 51(1-3): 25-37.

[4] [4] CHAN K, ITO H, INABA H. Remote sensing system for near-infrared differential absorption of CH4 gas using low-loss optical fiber link［J］. Applied Optics, 1984, 23(19): 3415-3420.

[5] [5] WANG Yu-tian, GUO Zeng-jun, WANG Li-tian. Study on difference absorption optical fiber CH4 sensor［J］. Journal of Optoelectronics·Laser, 2001, 12(7): 675-678.

[6] [6] LIN Feng, CAI Hai-wen, XIA Zhi-ping. Study on fiber methane sensing system using FBG filters［J］. Chinese Journal of Lasers, 2005, 4(32): 549-552.

[7] [7] PFEIFFER P, MEYRUEIS P, PATILLON D. Limiting sensitivity of a differential absorption spectrometer with direct detection in the 2ν3 and ν2+2ν3 vibration bands［J］. Instrumentation and Measurement, 2004, 53(1): 45-50.

[8] [8] KUNTZ M, HOPFNER M. Efficient line-by-line calculation of absorption coefficients［J］. Journal of Quantitative Spectroscopy & Radiative Transfer, 1999, 63(1): 97-114.

[9] [9] MILLER C M. Characteristics and applications of high performance, tunable, fiber Fabry-Perot filters［C］. Proceedings of 41st Electronic Components and Technology Conference, 1991: 489-492.

[10] [10] ROTHMAN L S, JACQUEMARTA D, BARBE A. The HITRAN 2004 molecular spectroscopic database［J］. Journal of Quantitative Spectroscopy & Radiative Transfer, 2005, 96(2): 139-204.