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Electro-optic comb based real time ultra-high sensitivity phase noise measurement system for high frequency microwaves
https://tokushima-u.repo.nii.ac.jp/records/2008166
https://tokushima-u.repo.nii.ac.jp/records/2008166d8dcdfe5-be29-46e1-8035-c3da7a3b8a6e
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
srep_7_2847.pdf (2.33 MB)
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| Item type | 文献 / Documents(1) | |||||||
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| 公開日 | 2021-01-15 | |||||||
| アクセス権 | ||||||||
| アクセス権 | open access | |||||||
| 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 | |||||||
| 出版社版DOI | ||||||||
| 関連識別子 | https://doi.org/10.1038/s41598-017-03049-5 | |||||||
| 関連名称 | 10.1038/s41598-017-03049-5 | |||||||
| 出版タイプ | ||||||||
| 出版タイプ | VoR | |||||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||||
| タイトル | ||||||||
| タイトル | Electro-optic comb based real time ultra-high sensitivity phase noise measurement system for high frequency microwaves | |||||||
| 著者 |
久世, 直也
× 久世, 直也× Fermann, M. E.
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| 抄録 | ||||||||
| 内容記述 | Recent progress in ultra low phase noise microwave generation indispensably depends on ultra low phase noise characterization systems. However, achieving high sensitivity currently relies on time consuming averaging via cross correlation, which sometimes even underestimates phase noise because of residual correlations. Moreover, extending high sensitivity phase noise measurements to microwaves beyond 10 GHz is very difficult because of the lack of suitable high frequency microwave components. In this work, we introduce a delayed self-heterodyne method in conjunction with sensitivity enhancement via the use of higher order comb modes from an electro-optic comb for ultra-high sensitivity phase noise measurements. The method obviates the need for any high frequency RF components and has a frequency measurement range limited only by the bandwidth (100 GHz) of current electro-optic modulators. The estimated noise floor is as low as −133 dBc/Hz, −155 dBc/Hz, −170 dBc/Hz and −171 dBc/Hz without cross correlation at 1 kHz, 10 kHz, 100 kHz and 1 MHz Fourier offset frequency for a 10 GHz carrier, respectively. Moreover, since no cross correlation is necessary, RF oscillator phase noise can be directly suppressed via feedback up to 100 kHz frequency offset. | |||||||
| 書誌情報 |
en : Scientific Reports 巻 7, p. 2847, 発行日 2017-06-06 |
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| 収録物ID | ||||||||
| 収録物識別子タイプ | ISSN | |||||||
| 収録物識別子 | 20452322 | |||||||
| 出版者 | ||||||||
| 出版者 | Springer Nature | |||||||
| 権利情報 | ||||||||
| 権利情報 | This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ | |||||||
| EID | ||||||||
| 識別子 | 358665 | |||||||
| 言語 | ||||||||
| 言語 | eng | |||||||
