Geometrically-shaped multi-dimensional modulation formats in coherent optical transmission systems
Shaping modulation formats in multi-dimensional (MD) space is an effective approach to
harvest spectral efficiency gains in both the additive white Gaussian noise (AWGN) channel …
harvest spectral efficiency gains in both the additive white Gaussian noise (AWGN) channel …
Chaotic phase noise-like encryption based on geometric shaping for coherent data center interconnections
W Zeng, C Zhang, X Liang, Y Luo, X Wang, K Qiu - Optics Express, 2024 - opg.optica.org
The network traffic of data centers (DCs) has increased unprecedentedly with the rapid
development of digital economy. However, the data transmission faces security threats in the …
development of digital economy. However, the data transmission faces security threats in the …
Analytical model of nonlinear fiber propagation for general dual-polarization four-dimensional modulation formats
Coherent dual-polarization (DP) optical transmission systems encode information on the
four available degrees of freedom of an optical field: the two polarization states, each with …
four available degrees of freedom of an optical field: the two polarization states, each with …
On the Performance Limits of High-Speed Transmission Using a Single Wideband Coherent Receiver
The performance of a wideband coherent receiver was investigated. The relative impact of
digital pre-distortion, geometric constellation shaping and pilot sequence detection, as well …
digital pre-distortion, geometric constellation shaping and pilot sequence detection, as well …
Geometric shaping for distortion-limited intensity modulation/direct detection data center links
Intra-data center links are subject to transmission impairments that pose challenges for
efficient scaling of per-wavelength data rates beyond 100 Gb/s. Limited electrical and optical …
efficient scaling of per-wavelength data rates beyond 100 Gb/s. Limited electrical and optical …
Physical realizations of multidimensional Voronoi constellations in optical communication systems
Multidimensional geometric shaping has been shown to outperform uniform quadrature
amplitude modulation (QAM) in optical communication systems but the complexity of symbol …
amplitude modulation (QAM) in optical communication systems but the complexity of symbol …
Ultra-high-cardinality geometric shaping in the finite SNR regime
S Goossens, YC Gültekin… - Philosophical …, 2024 - royalsocietypublishing.org
Four-dimensional (4D) constellations with up to 131 072 points (17 bit/4D-sym) are
designed for the first time using geometric shaping. The constellations are optimized in …
designed for the first time using geometric shaping. The constellations are optimized in …
End-to-end optimization of optical communication systems based on directly modulated lasers
The use of directly modulated lasers (DMLs) is attractive in low-power, cost-constrained
short-reach optical links. However, their limited modulation bandwidth can induce waveform …
short-reach optical links. However, their limited modulation bandwidth can induce waveform …
Record 2.29 Tb/s GS-256QAM transmission using a single receiver
Abstract 8× 26 GBd DP-GS256QAM super-channel with a net data rate of 2.29 Tb/s was
received after 75 km transmission using a single 211-GHz optical receiver. The use of digital …
received after 75 km transmission using a single 211-GHz optical receiver. The use of digital …
Orthant-symmetric four-dimensional geometric shaping for fiber-optic channels via a nonlinear interference model
Maximizing the data throughput for optical fiber communication via signal shaping has
usually been regarded as challenging due to the nonlinear interference and implementation …
usually been regarded as challenging due to the nonlinear interference and implementation …