Acta Photonica Sinica, Volume. 41, Issue 12, 1479(2012)
Design on Optical Fiber Methane Sensing Systems Employing Wavelength-Scanning Based Differential Absorption Techniques
Utilizing a super-luminescent diode (SLD) in 1 330 nm band and a fiber Fabry-Perot tunable filter (FFP-TF), an optical fiber methane sensing system is experimentally demonstrated. The differential absorption technique and a reference method are employed: a reference channel is introduced to eliminate the fluctuation of light source spectrum, and the two wavelengths are acquired by tuning the FFP-TF. The influence of the light source, loss of leading fiber, and the filters′ variations are all avoided. A minimum detectable methane concentration of 0.15% achieved.
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XIAO Shang-hui, TANG Cai-jie, JIANG Yi, TANG Jun. Design on Optical Fiber Methane Sensing Systems Employing Wavelength-Scanning Based Differential Absorption Techniques[J]. Acta Photonica Sinica, 2012, 41(12): 1479
Received: Jun. 4, 2012
Accepted: --
Published Online: Dec. 24, 2012
The Author Email: Shang-hui XIAO (xiaosh73@163.com)