Ultrastable Long-Haul Fiber-Optic Radio Frequency Transfer Based on Dual-PLL
In this paper, we demonstrate ultrastable radio-frequency (RF) transfer over long-haul optical fiber link. Our stabilized RF transfer technique is based on high-performance dual phase locked loops (dual-PLL) configuration which improves signal to noise ratio (SNR) of the round trip transmitted signa...
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| Format: | Article |
| Language: | English |
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IEEE
2021-01-01
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| Series: | IEEE Photonics Journal |
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| Online Access: | https://ieeexplore.ieee.org/document/9286579/ |
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| author | Chenxia Liu Jianming Shang Zhuoze Zhao Hao Gao Jinting Cong Junjie Shi Bin Luo Xing Chen Song Yu |
| author_facet | Chenxia Liu Jianming Shang Zhuoze Zhao Hao Gao Jinting Cong Junjie Shi Bin Luo Xing Chen Song Yu |
| author_sort | Chenxia Liu |
| collection | DOAJ |
| description | In this paper, we demonstrate ultrastable radio-frequency (RF) transfer over long-haul optical fiber link. Our stabilized RF transfer technique is based on high-performance dual phase locked loops (dual-PLL) configuration which improves signal to noise ratio (SNR) of the round trip transmitted signals. At the local site, the frequency conversion phase-lock receiver (FCPLR) accomplishes high-quality phase tracking of the RF signal which is transmitted after long distance optical fiber link. The low phase noise signal generated by FCPLR is passively mixed with a local reference signal to realize phase conjugation. Through advisable frequency design, there is no residual RF leakage and nonlinear effect of frequency mixing. Another PLL incorporating a high-quality cleanup oscillator is located at the remote site that favourably improves short-term instability of our transmission system. In our experiment, stabilized 2.4 GHz RF signal transfer over a 1007 km optical fiber link is demonstrated without any electric relay system, and the transmission system achieves a fractional frequency instability of 8.20 × <inline-formula><tex-math notation="LaTeX">$10^{-14}$</tex-math></inline-formula>@1 s and 7.87 × <inline-formula><tex-math notation="LaTeX">$10^{-17}$</tex-math></inline-formula>@10 000 s. |
| format | Article |
| id | doaj-art-55bf552f82c34439ac2a05225deeefad |
| institution | Kabale University |
| issn | 1943-0655 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Photonics Journal |
| spelling | doaj-art-55bf552f82c34439ac2a05225deeefad2025-08-20T03:33:14ZengIEEEIEEE Photonics Journal1943-06552021-01-011311810.1109/JPHOT.2020.30432639286579Ultrastable Long-Haul Fiber-Optic Radio Frequency Transfer Based on Dual-PLLChenxia Liu0Jianming Shang1Zhuoze Zhao2Hao Gao3Jinting Cong4Junjie Shi5Bin Luo6Xing Chen7Song Yu8State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing, ChinaState Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing, ChinaState Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing, ChinaState Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing, ChinaState Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing, ChinaState Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing, ChinaState Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing, ChinaState Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing, ChinaState Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing, ChinaIn this paper, we demonstrate ultrastable radio-frequency (RF) transfer over long-haul optical fiber link. Our stabilized RF transfer technique is based on high-performance dual phase locked loops (dual-PLL) configuration which improves signal to noise ratio (SNR) of the round trip transmitted signals. At the local site, the frequency conversion phase-lock receiver (FCPLR) accomplishes high-quality phase tracking of the RF signal which is transmitted after long distance optical fiber link. The low phase noise signal generated by FCPLR is passively mixed with a local reference signal to realize phase conjugation. Through advisable frequency design, there is no residual RF leakage and nonlinear effect of frequency mixing. Another PLL incorporating a high-quality cleanup oscillator is located at the remote site that favourably improves short-term instability of our transmission system. In our experiment, stabilized 2.4 GHz RF signal transfer over a 1007 km optical fiber link is demonstrated without any electric relay system, and the transmission system achieves a fractional frequency instability of 8.20 × <inline-formula><tex-math notation="LaTeX">$10^{-14}$</tex-math></inline-formula>@1 s and 7.87 × <inline-formula><tex-math notation="LaTeX">$10^{-17}$</tex-math></inline-formula>@10 000 s.https://ieeexplore.ieee.org/document/9286579/Frequency instabilityoptical fiber linkradio frequency transfer |
| spellingShingle | Chenxia Liu Jianming Shang Zhuoze Zhao Hao Gao Jinting Cong Junjie Shi Bin Luo Xing Chen Song Yu Ultrastable Long-Haul Fiber-Optic Radio Frequency Transfer Based on Dual-PLL IEEE Photonics Journal Frequency instability optical fiber link radio frequency transfer |
| title | Ultrastable Long-Haul Fiber-Optic Radio Frequency Transfer Based on Dual-PLL |
| title_full | Ultrastable Long-Haul Fiber-Optic Radio Frequency Transfer Based on Dual-PLL |
| title_fullStr | Ultrastable Long-Haul Fiber-Optic Radio Frequency Transfer Based on Dual-PLL |
| title_full_unstemmed | Ultrastable Long-Haul Fiber-Optic Radio Frequency Transfer Based on Dual-PLL |
| title_short | Ultrastable Long-Haul Fiber-Optic Radio Frequency Transfer Based on Dual-PLL |
| title_sort | ultrastable long haul fiber optic radio frequency transfer based on dual pll |
| topic | Frequency instability optical fiber link radio frequency transfer |
| url | https://ieeexplore.ieee.org/document/9286579/ |
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