Design on optical fiber methane sensing systems employing wavelength-scanning based differential absorption techniques

被引：1

作者：

National Key Lab of Communication, University of Electronic Science and Technology of China, Chengdu 611731, China ^{[1
]}

不详 ^{[2
]}

不详 ^{[3
]}

不详 ^{[4
]}

机构：

[1] National Key Lab of Communication, University of Electronic Science and Technology of China

[2] School of Physics and Electronic Engineering, Yibin University, Yibin

[3] School of Optoelectronics, Beijing Institute of Technology

[4] Sichuan Coal Group Furong Company, Yibin

来源：

Guangzi Xuebao | / 12卷 / 1479-1482期

关键词：

Differential absorption; Fiber Fabry-Perot tunable filter; Fiber optic sensor; Methane sensing;

D O I：

10.3788/gzxb20124112.1479

中图分类号：

学科分类号：

摘要：

Utilizing a super-luminescent diode (SLD) in 1330 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.

引用

页码：1479 / 1482

页数：3

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