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Research on the enhancement of signal-to-noise ratio by radio frequency white noise in compact dense-pattern multipass cell for trace gas detection

文献类型：期刊论文

作者Tian, Xing1,2; Cheng, Gang1; Chen, Jiajin3; Liu, Kun3
刊名MICROWAVE AND OPTICAL TECHNOLOGY LETTERS
出版日期2022-02-17
关键词minimum detectable concentration optical interference radio frequency bandwidth-limited white noise signal-to-noise ratio
ISSN号0895-2477
DOI10.1002/mop.33168
通讯作者Cheng, Gang(chgmech@mail.ustc.edu.cn)
英文摘要The number of reflections is increased as much as possible in the optical multi-pass absorption cell to improve the effective optical path, but easily affected by light overlap resulting in light path interference. We present a novel strategy for suppressing the optical interference and improving the signal-to-noise ratio (SNR) with the radio frequency (RF) bandwidth-limited white noise. A linear output spectral response of the intensity with the CH4 concentration between 50 ppmv and 180 ppmv with a distributed feedback laser (DFB) at 1.653 mu m was observed. The results show that the addition of RF noise effectively increases the laser line width and improves the SNR. About 3.6 gain in the SNR has been achieved using the RF noise, which led to a minimum detectable concentration of 0.03 ppmv (SNR = 1573). This performance level can reduce the difficulty of light adjustment and is very suitable for applications to trace gas sensing in harsh environment.
WOS关键词INDUCED THERMOELASTIC SPECTROSCOPY ; LASER
资助项目National Natural Science Foundation of China[62105005] ; Natural Science Research Project of Anhui Universities[KJ2020A0290] ; Youth Innovation Promotion Association of Chinese Academy of Sciences[2015263]
WOS研究方向Engineering ; Optics
语种英语
WOS记录号WOS:000756839300001
出版者WILEY
资助机构National Natural Science Foundation of China ; Natural Science Research Project of Anhui Universities ; Youth Innovation Promotion Association of Chinese Academy of Sciences
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/127603]  
专题中国科学院合肥物质科学研究院
通讯作者Cheng, Gang
作者单位1.Anhui Univ Sci & Technol, State Key Lab Min Response & Disaster Prevent & C, Huainan 232001, Peoples R China
2.Anhui Univ Sci & Technol, Sch Artificial Intelligence, Huainan, Peoples R China
3.Chinese Acad Sci, Anhui Inst Opt & Fine Mech, Hefei, Peoples R China
推荐引用方式
GB/T 7714		 Tian, Xing,Cheng, Gang,Chen, Jiajin,et al. Research on the enhancement of signal-to-noise ratio by radio frequency white noise in compact dense-pattern multipass cell for trace gas detection[J]. MICROWAVE AND OPTICAL TECHNOLOGY LETTERS,2022.
APA Tian, Xing,Cheng, Gang,Chen, Jiajin,&Liu, Kun.(2022).Research on the enhancement of signal-to-noise ratio by radio frequency white noise in compact dense-pattern multipass cell for trace gas detection.MICROWAVE AND OPTICAL TECHNOLOGY LETTERS.
MLA Tian, Xing,et al."Research on the enhancement of signal-to-noise ratio by radio frequency white noise in compact dense-pattern multipass cell for trace gas detection".MICROWAVE AND OPTICAL TECHNOLOGY LETTERS (2022).

入库方式： OAI收割

来源：合肥物质科学研究院

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