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Linearizing optical frequency-sweep of a laser diode for FMCW reflectometry
https://doi.org/10.24517/00007431
https://doi.org/10.24517/000074316419de27-c165-4588-9906-e210cf064e05
名前 / ファイル | ライセンス | アクション |
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00482260.pdf (558.7 kB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2017-10-03 | |||||
タイトル | ||||||
タイトル | Linearizing optical frequency-sweep of a laser diode for FMCW 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 | |||||
ID登録 | ||||||
ID登録 | 10.24517/00007431 | |||||
ID登録タイプ | JaLC | |||||
著者 |
Iiyama, Koichi
× Iiyama, Koichi× Hayashi, Ken-ichi× Ida, Yoshio× Ikeda, Hitoshi× Sakai, Yoshihisa |
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著者別表示 |
飯山, 宏一
× 飯山, 宏一 |
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提供者所属 | ||||||
内容記述タイプ | Other | |||||
内容記述 | 金沢大学工学部 | |||||
書誌情報 |
Journal of Lightwave Technology 巻 14, 号 2, p. 173-178, 発行日 1996-02-01 |
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ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 0733-8724 | |||||
DOI | ||||||
関連タイプ | isIdenticalTo | |||||
識別子タイプ | DOI | |||||
関連識別子 | https://doi.org/10.1109/50.482260 | |||||
出版者 | ||||||
出版者 | IEEE | |||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | We propose and demonstrate a novel linearizing method of optical frequency-sweep of a laser diode for frequency-modulated continuous-wave (FMCW) reflectometry. In order to linearly sweep the optical frequency, we adopt a reference interferometer and an electric phase comparator. The interference beat signal of the reference interferometer is phase-compared with an external reference rectangular signal having a fixed frequency near the interference beat signal frequency by a lockin amplifier. The error signal from the lock-in amplifier is fed back to the modulating signal of the injection current of the laser. Thus, a phase-locked loop composed of optical and electric circuits can be established, and the beat signal frequency is locked to the frequency of the reference signal. The optical frequency of the laser diode is, therefore, excellently linearly swept in time. In order to experimentally confirm the linearity of the proposed method, we apply this frequency-swept laser diode to the FMCW reflectometry. Resultingy, the improvement of the linearity is estimated to be about 10 dB. And the theoretically limited spatial resolution of the FMCW reflectometry is achieved. The backscattered light in optical waveguide devices is measured by the FMCW reflectometry using the proposed light source, and the propagation loss of a single-mode glass waveguide is successfully evaluated. | |||||
権利 | ||||||
権利情報 | 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..Journal of Lightwave Technology 14 (2), pp. 173-178 | |||||
著者版フラグ | ||||||
出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 |