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タイトル: Extended-range FMCW reflectometry using an optical loop with a frequency shifter
著者: Zhou, Xiaoqun
Iiyama, Koichi link image link image
Hayashi, Ken-ichi
飯山, 宏一
発行日: 1996年 2月
出版社(者): IEEE
引用: IEEE Photonics Technology Letters 8 (2), pp. 248-250
雑誌名: IEEE Photonics Technology Letters
ISSN: 1041-1135
巻: 8
号: 2
開始ページ: 248
終了ページ: 250
キーワード: Bandwidth
Distributed feedback lasers
Frequency domain analysis
Frequency modulation
Optical fibers
Optical variables measurement
Refractive index
Semiconductor lasers
Signal interference
Spectrum analyzers
Acoustooptical modulator
Frequency modulated continuous wave reflectometry
Frequency shifter
Optical fiber loop
Optical path difference
抄録: We propose a novel method to extend the measurement range of FMCW reflectometry. In this method, an optical loop with a frequency shifter (working frequency fFS Hz) is incorporated in the reference arm of the reflectometry. As a result, the interference signal corresponding to the reference beam that circulates N rounds in the loop appears around (N × fFS) Hz, which means that the signals from different measurement ranges can be detected in different frequency domains. Therefore, it is possible to extend the measurement range. In the experiment, the measurement range is extended from 15 m to 48 m.
URI: http://hdl.handle.net/2297/1783
資料種別: Journal Article
権利関係: Copyright © 1996 IEEE.. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE..IEEE Photonics Technology Letters 8 (2), pp. 248-250
版表示: publisher
出現コレクション:1.査読済論文(工)

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