Journal ArticleDOI
Power-Efficient Single-Sideband Transmission With Clipped Iterative SSBI Cancellation
TLDR
This article proposes an iterative SSBI cancellation scheme, which can be effectively applied without digital upsampling at low CSPR values, and experimentally demonstrated a 30 Gbaud 128 QAM SSB direct detection transmission over 80 km with a lowCSPR of 5 dB, showing 4.6 dB performance improvement compared to the Kramers–Kronig scheme operated without digitalupsampling.Abstract:
Distributed data-center networks rely on power and cost-efficient high-speed fiber optical connections over distances up to 80 km which can be densely wavelength-division multiplexed (WDM) in the C-band. Recently, single-sideband (SSB) direct detection (DD) has been considered as an attractive transmission scheme for achieving data rates beyond 100 Gb/s per channel over 80 km. The advantages of SSB DD transmission include its simple transceiver architecture and its capability of electronic dispersion compensation. However, SSB transmissions require a carrier-to-signal power ratio (CSPR) of around 10 dB, even when signal-signal beat interference (SSBI) cancellations are applied. This high CSPR value reduces the power efficiency of the system and limits the total number of WDM channels and accordingly the total system capacity due to power limitation of optical amplifiers. In this article, we propose an iterative SSBI cancellation scheme, which can be effectively applied without digital upsampling at low CSPR values. Using this technique, we have experimentally demonstrated a 30 Gbaud 128 QAM SSB direct detection transmission over 80 km with a low CSPR of 5 dB, showing 4.6 dB performance improvement compared to the Kramers–Kronig scheme operated without digital upsampling.read more
Citations
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Dual-Carrier-Assisted Phase Retrieval for Polarization Division Multiplexing
TL;DR: In this article , a dual-carrier-assisted phase retrieval (D-CAPR) algorithm was proposed and further fulfilled the dual-polarization carrier assisted phase retrieval scheme, which is able to directly retrieve the phases of optical field given the prior phase information of two carriers on each polarization without the use of any frequency guard band.
Journal ArticleDOI
Dual-Carrier-Assisted Phase Retrieval for Polarization Division Multiplexing
TL;DR: In this paper , a dual-carrier-assisted phase retrieval (D-CAPR) algorithm was proposed and further fulfilled the dual-polarization carrier assisted phase retrieval scheme, which is able to directly retrieve the phases of optical field given the prior phase information of two carriers on each polarization without the use of any frequency guard band.
Proceedings ArticleDOI
Optical Single-Sideband Direct Detection Transmissions: Recent Progress and Commercial Aspects
Son Thai Le,Karsten Schuh,Fred Buchali,Tomislav Drenski,Andrew Hills,Malcolm King,Theodore Sizer +6 more
TL;DR: In this paper, the authors discuss recent progress and commercialization of optical single-sideband direct detection systems with data rate of 100 Gb/s and beyond, critical hardware requirements and signal processing challenges, especially for the cancellation of signal-signal beat interference, are reviewed.
Optical Field Recovery in Jones Space
TL;DR: In this paper , a receiver of Jones-space field recovery (JSFR) is proposed to realize polarization diversity with SP carrier-assisted direct detection (DD) schemes, and the proposed receiver shows good tolerance to PMD since the optical field recovery is conducted before polarization recovery.
Proceedings ArticleDOI
882 Gbps Transmission over 100 km of SSMF using a Self-Calibrated Single-ended Coherent Receiver
TL;DR: In this article, a self-calibration technique for single-ended coherent receivers was proposed and demonstrated with a record net data rate of 882 Gbps over 100 km of SSMF using either a direct field reconstruction scheme or a clipped iterative SSBI cancellation scheme.
References
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Journal ArticleDOI
Kramers–Kronig coherent receiver
TL;DR: This work proposes a direct-detection coherent receiver that combines the advantages of coherent transmission and the cost-effectiveness of direct detection, and is more efficient in terms of spectral occupancy and energy consumption.
Journal ArticleDOI
SSBI Mitigation and the Kramers–Kronig Scheme in Single-Sideband Direct-Detection Transmission With Receiver-Based Electronic Dispersion Compensation
Zhe Li,M. Sezer Erkilinc,Kai Shi,Eric Sillekens,Lidia Galdino,Benn C. Thomsen,Polina Bayvel,Robert I. Killey +7 more
TL;DR: In this paper, the performance of direct-detection transceivers employing electronic dispersion compensation combined with DSP-based receiver linearization techniques is assessed through experiments on a 4 × 112 Gb/s wavelength-division multiplexing direct detection single-sideband 16 quadratic-amplitude modulation Nyquist-subcarrier-modulation system operating at a net optical information spectral density of 2.8 b/s/Hz in transmission over standard single mode fiber links of up to 240 km.
Journal ArticleDOI
Kramers–Kronig Receivers for 100-km Datacenter Interconnects
Xi Chen,Cristian Antonelli,Sethumadhavan Chandrasekhar,Gregory Raybon,Antonio Mecozzi,Mark Shtaif,Peter J. Winzer +6 more
TL;DR: In this paper, the authors review experimental demonstrations of Kramers-Kronig (KK) based direct detection systems with high per-carrier interface rates, high spectral efficiencies, and ∼100-km reach.
Journal ArticleDOI
Spectrally efficient direct-detected OFDM transmission employing an iterative estimation and cancellation technique.
Wei-Ren Peng,Xiaoxia Wu,Kai-Ming Feng,V.R. Arbab,Bishara Shamee,Jeng-Yuan Yang,Louis Christen,Alan E. Willner,Sien Chi +8 more
TL;DR: By employing the iterative estimation and cancellation technique for the signal-signal beat interference at the receiver, the approach alleviates the need of the frequency gap, which is typically reserved for isolating the SSBI, and saves half the electrical bandwidth, thus being very spectrally efficient.
Proceedings ArticleDOI
100-Gb/s discrete-multitone transmission over 80-km SSMF using single-sideband modulation with novel interference-cancellation scheme
TL;DR: In this article, a scheme to cancel signal-signal beat interference in direct-detection systems with single-sideband modulation was proposed. But this scheme is not suitable for direct detection systems.