Transmission of 64-Gb/s Pilot-Assisted PAM-4 Signal Over 1440-km SSMF With Phase Noise Mitigation
We propose a direct detection scheme for pulse amplitude modulation (PAM) signals over long-reach fiber transmission with phase noise mitigation. In this scheme, an optical carrier is transmitted as pilot together with the optical signal, whose frequency is located at the edge of the optical signal....
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| Format: | Article |
| Language: | English |
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IEEE
2019-01-01
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| Series: | IEEE Photonics Journal |
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| Online Access: | https://ieeexplore.ieee.org/document/8567915/ |
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| _version_ | 1849416980095827968 |
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| author | Chao Yang Ming Luo Cai Li Wei Li Xiang Li |
| author_facet | Chao Yang Ming Luo Cai Li Wei Li Xiang Li |
| author_sort | Chao Yang |
| collection | DOAJ |
| description | We propose a direct detection scheme for pulse amplitude modulation (PAM) signals over long-reach fiber transmission with phase noise mitigation. In this scheme, an optical carrier is transmitted as pilot together with the optical signal, whose frequency is located at the edge of the optical signal. The electrical field of the optical signal can be retrieved via the beating between the pilot and optical signal in one photodetector at the receiver side, which facilitates the digital compensation of chromatic dispersion effect. To enable real value signal processing, digital carrier regeneration is proposed to mitigate the phase noise fluctuation in the proposed scheme. To further improve the performance, the digital signal processing including Kramers–Kronig field reconstruction and Volterra equalizer are applied to reduce the signal-to-signal beat noise and nonlinear distortions after fiber transmission. The experimental results for both 56- and 64-Gb/s PAM-4 signal transmission cases show that the performances can be significantly improvement based on the proposed scheme and DSP methods. Both 56- and 64-Gb/s PAM-4 signal transmissions over 720- and 1440-km standard single mode fiber have been successfully achieved under 7% and 20% forward error correction codes, respectively. |
| format | Article |
| id | doaj-art-7dff88163eaf41b2ae007b93488d56d4 |
| institution | Kabale University |
| issn | 1943-0655 |
| language | English |
| publishDate | 2019-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Photonics Journal |
| spelling | doaj-art-7dff88163eaf41b2ae007b93488d56d42025-08-20T03:32:58ZengIEEEIEEE Photonics Journal1943-06552019-01-011111910.1109/JPHOT.2018.28855438567915Transmission of 64-Gb/s Pilot-Assisted PAM-4 Signal Over 1440-km SSMF With Phase Noise MitigationChao Yang0Ming Luo1Cai Li2Wei Li3https://orcid.org/0000-0003-2394-8745Xiang Li4https://orcid.org/0000-0002-2977-3846Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, ChinaWuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, ChinaState Key Laboratory of Optical Communication Technology and Networks, Wuhan Research Institute of Posts Telecommunications, Wuhan, ChinaWuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, ChinaNational Optoelectronics Innovation Center, Wuhan Research Institute of Posts Telecommunications, Wuhan, ChinaWe propose a direct detection scheme for pulse amplitude modulation (PAM) signals over long-reach fiber transmission with phase noise mitigation. In this scheme, an optical carrier is transmitted as pilot together with the optical signal, whose frequency is located at the edge of the optical signal. The electrical field of the optical signal can be retrieved via the beating between the pilot and optical signal in one photodetector at the receiver side, which facilitates the digital compensation of chromatic dispersion effect. To enable real value signal processing, digital carrier regeneration is proposed to mitigate the phase noise fluctuation in the proposed scheme. To further improve the performance, the digital signal processing including Kramers–Kronig field reconstruction and Volterra equalizer are applied to reduce the signal-to-signal beat noise and nonlinear distortions after fiber transmission. The experimental results for both 56- and 64-Gb/s PAM-4 signal transmission cases show that the performances can be significantly improvement based on the proposed scheme and DSP methods. Both 56- and 64-Gb/s PAM-4 signal transmissions over 720- and 1440-km standard single mode fiber have been successfully achieved under 7% and 20% forward error correction codes, respectively.https://ieeexplore.ieee.org/document/8567915/Direct detectionKramers-Kronig (KK) schemedigital carrier regeneration (DCR)Volterra equalizer. |
| spellingShingle | Chao Yang Ming Luo Cai Li Wei Li Xiang Li Transmission of 64-Gb/s Pilot-Assisted PAM-4 Signal Over 1440-km SSMF With Phase Noise Mitigation IEEE Photonics Journal Direct detection Kramers-Kronig (KK) scheme digital carrier regeneration (DCR) Volterra equalizer. |
| title | Transmission of 64-Gb/s Pilot-Assisted PAM-4 Signal Over 1440-km SSMF With Phase Noise Mitigation |
| title_full | Transmission of 64-Gb/s Pilot-Assisted PAM-4 Signal Over 1440-km SSMF With Phase Noise Mitigation |
| title_fullStr | Transmission of 64-Gb/s Pilot-Assisted PAM-4 Signal Over 1440-km SSMF With Phase Noise Mitigation |
| title_full_unstemmed | Transmission of 64-Gb/s Pilot-Assisted PAM-4 Signal Over 1440-km SSMF With Phase Noise Mitigation |
| title_short | Transmission of 64-Gb/s Pilot-Assisted PAM-4 Signal Over 1440-km SSMF With Phase Noise Mitigation |
| title_sort | transmission of 64 gb x002f s pilot assisted pam 4 signal over 1440 km ssmf with phase noise mitigation |
| topic | Direct detection Kramers-Kronig (KK) scheme digital carrier regeneration (DCR) Volterra equalizer. |
| url | https://ieeexplore.ieee.org/document/8567915/ |
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