Real-time 40×800Gb/s DP-64QAM-PCS transmissions over three different optical fibers (i.e., CTF, G.652.D, G.654.E) are tested under 28-dBm launch power for the first time. No nonlinear penalty is observed in the C...
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We propose a multi-access fiber-optic time transmission scheme with high scalability and robustness, which is flexible for client expansion and reliable in the event of partial network damage.
We propose a multi-access fiber-optic time transmission scheme with high scalability and robustness, which is flexible for client expansion and reliable in the event of partial network damage.
We propose a weak carrier-assisted phase-retrieval receiver to obtain initial phase for modified Gerchberg-Saxton algorithm with fast convergence to realize hardware-efficient, computationally-efficient, and pilot-sym...
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ISBN:
(纸本)9781557524669
We propose a weak carrier-assisted phase-retrieval receiver to obtain initial phase for modified Gerchberg-Saxton algorithm with fast convergence to realize hardware-efficient, computationally-efficient, and pilot-symbol-free optical field recovery, and compare it with other phase retrieval schemes.
Searching for exotic spin-dependent interactions that beyond the standard model has been of interest for past decades and is crucial for unraveling the mysteries of the universe. Previous laboratory searches primarily...
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We propose a low-complexity and non-iterative SSBI cancellation algorithm operating at the Nyquist sampling rate employing SSBI decomposition followed by sqrt operation, and experimentally validate it in a 58GBaud 16-...
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ISBN:
(纸本)9781557524669
We propose a low-complexity and non-iterative SSBI cancellation algorithm operating at the Nyquist sampling rate employing SSBI decomposition followed by sqrt operation, and experimentally validate it in a 58GBaud 16-QAM transmission system with 80km reach.
In the evolving field of Continuous Variable Quantum key Distribution (CV-QKD), notable for its synergistic potential with existing opticalcommunication infrastructures, a high channel capacity, and an anticipated su...
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We experimentally compare polybinary shaping and Tomlinson-Harashima precoding (THP) under 25GHz brick-wall bandwidth limitation, achieving 120%, 50% and 20% faster-than-Nyquist rates with 110Gbaud OOK, 75Gbaud PAM-4 ...
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ISBN:
(数字)9781957171159
ISBN:
(纸本)9781665475570
We experimentally compare polybinary shaping and Tomlinson-Harashima precoding (THP) under 25GHz brick-wall bandwidth limitation, achieving 120%, 50% and 20% faster-than-Nyquist rates with 110Gbaud OOK, 75Gbaud PAM-4 and 60Gbaud PAM-6. Results indicate that polybinary shaping outperforms THP with OOK, while THP is better for higher-order formats.
The data center has developed rapidly over the past few years, leading to the demand for high speed data transmission. Vertical cavity surface emitting lasers(VCSELs) based optical interconnect is evolving to 100 Gb/s...
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The data center has developed rapidly over the past few years, leading to the demand for high speed data transmission. Vertical cavity surface emitting lasers(VCSELs) based optical interconnect is evolving to 100 Gb/s and beyond, which makes nonlinear distortions difficult to be compensated or equalized by conventional equalizers. Moreover, the challenge becomes very complicated for conventional equalizers because of the presence of inter-symbol interference(ISI) together with the nonlinear distortions. So many neural network based DSP algorithms such as artificial neural network(ANN) have been proposed to mitigate the distortions. However, ANN has the limitations that sample's relevant information is not considered,leading to degradation in ANN's performance and high computational complexity. In this paper, in order to maintain an excellent capability of mitigating nonlinear distortions like other neural network based equalizers while considering the sample's relevant information to reduce the computational complexity, we propose a deep belief network-hidden Markov model(DBN-HMM) based nonlinear equalizer which is tested in a PAM-4 modulated VCSEL and multimode fiber(MMF) optical interconnect link experimentally. The BER performance can be greatly improved compared with conventional DSP algorithms. In addition, the computational complexity of DBN-HMM based equalizer can be about 41% lower than that of ANN based method with a similar BER performance.
optical field recovery not only increases the optical modulation dimensions but also enables digital compensation for fiber impairments such as chromatic dispersion. In this paper, we propose the first optical full-fi...
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optical field recovery not only increases the optical modulation dimensions but also enables digital compensation for fiber impairments such as chromatic dispersion. In this paper, we propose the first optical full-field recovery receiver in Jones space to achieve polarization and phase diversity for the direct detection system. 448 Gb/s dual-polarization 16QAM signal is successfully recovered after 80-km SMF transmission with 7.15-b/s/Hz net electrical spectral efficiency.
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