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Signal processing method based on group delay calculation for distributed Bragg wavelength shift in optical frequency domain reflectometry
https://jaxa.repo.nii.ac.jp/records/22459
https://jaxa.repo.nii.ac.jp/records/224594b3b1fbb-500a-4fce-8d0d-82ee4ac814b6
Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2015-03-26 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Signal processing method based on group delay calculation for distributed Bragg wavelength shift in optical frequency domain reflectometry | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
アクセス権 | ||||||
アクセス権 | metadata only access | |||||
アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
著者 |
和田, 大地
× 和田, 大地× 井川, 寛隆× 村山, 英晶× 葛西, 時雄× Wada, Daichi× Igawa, Hirotaka× Murayama, Hideaki× Kasai, Tokio |
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著者所属 | ||||||
東京大学 | ||||||
著者所属 | ||||||
宇宙航空研究開発機構研究開発本部(JAXA) | ||||||
著者所属 | ||||||
東京大学 | ||||||
著者所属 | ||||||
宇宙航空研究開発機構航空本部(JAXA) | ||||||
著者所属(英) | ||||||
en | ||||||
The University of Tokyo | ||||||
著者所属(英) | ||||||
en | ||||||
Aerospace Research and Development Directorate, Japan Aerospace Exploration Agency (JAXA) | ||||||
著者所属(英) | ||||||
en | ||||||
The University of Tokyo | ||||||
著者所属(英) | ||||||
en | ||||||
Institute of Aeronautical Technology, Japan Aerospace Exploration Agency (JAXA) | ||||||
出版者(英) | ||||||
出版者 | Optical Society of America | |||||
書誌情報 |
en : Optics Express 巻 22, 号 6, p. 6829-6836, 発行日 2014-03-24 |
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抄録(英) | ||||||
内容記述タイプ | Other | |||||
内容記述 | A signal processing method based on group delay calculations is introduced for distributed measurements of long-length fiber Bragg gratings (FBGs) based on optical frequency domain reflectometry (OFDR). Bragg wavelength shifts in interfered signals of OFDR are regarded as group delay. By calculating group delay, the distribution of Bragg wavelength shifts is obtained with high computational efficiency. We introduce weighted averaging process for noise reduction. This method required only 3.5% of signal processing time which was necessary for conventional equivalent signal processing based on short-time Fourier transform. The method also showed high sensitivity to experimental signals where non-uniform strain distributions existed in a long-length FBG. | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 1094-4087 | |||||
DOI | ||||||
識別子タイプ | DOI | |||||
関連識別子 | http://dx.doi.org/10.1364/OE.22.006829 | |||||
関連名称 | info:doi/10.1364/OE.22.006829 | |||||
資料番号 | ||||||
内容記述タイプ | Other | |||||
内容記述 | 資料番号: PA1420006000 |