Raman amplification: An enabling technology for long-haul coherent transmission systems
WS Pelouch - Journal of Lightwave Technology, 2015 - ieeexplore.ieee.org
Raman amplification has been commercially utilized in optical transmission systems for
more than a decade. The drive toward higher spectral density has increased the interest in …
more than a decade. The drive toward higher spectral density has increased the interest in …
LDPC coded modulation with probabilistic shaping for optical fiber systems
LDPC Coded Modulation with Probabilistic Shaping for Optical Fiber Systems Page 1 Th2A.23.pdf
OFC 2015 © OSA 2015 LDPC Coded Modulation with Probabilistic Shaping for Optical Fiber …
OFC 2015 © OSA 2015 LDPC Coded Modulation with Probabilistic Shaping for Optical Fiber …
A simple and effective closed-form GN model correction formula accounting for signal non-Gaussian distribution
The GN model of nonlinear fiber propagation has been shown to overestimate the variance
of nonlinearity due to the signal Gaussianity approximation, leading to maximum reach …
of nonlinearity due to the signal Gaussianity approximation, leading to maximum reach …
Four-dimensional coded modulation with bit-wise decoders for future optical communications
A Alvarado, E Agrell - Journal of Lightwave Technology, 2015 - ieeexplore.ieee.org
Coded modulation (CM) is the combination of forward error correction (FEC) and multilevel
constellations. Coherent optical communication systems result in a four-dimensional (4D) …
constellations. Coherent optical communication systems result in a four-dimensional (4D) …
A time-domain extended Gaussian noise model
From first-order perturbation theory, we derive the autocorrelation function of the nonlinear
interference in coherent optical links. We show that the fundamental assumptions of the …
interference in coherent optical links. We show that the fundamental assumptions of the …
Design strategies and merit of system parameters for uniform uncompensated links supporting Nyquist-WDM transmission
We consider the transmission of Nyquist-wavelength-division-multiplexed channels based
on polarization-multiplexed m-ary QAM multilevel modulation formats with DSP-based …
on polarization-multiplexed m-ary QAM multilevel modulation formats with DSP-based …
Routing, modulation, spectrum and launch power assignment to maximize the traffic throughput of a nonlinear optical mesh network
We investigate the optimization of routing, modulation format adaptation, spectral and
launch power assignment as a means of improving the utilization of limited network …
launch power assignment as a means of improving the utilization of limited network …
On achievable rates for long-haul fiber-optic communications
Lower bounds on mutual information (MI) of long-haul optical fiber systems for hard-decision
and soft-decision decoding are studied. Ready-to-use expressions to calculate the MI are …
and soft-decision decoding are studied. Ready-to-use expressions to calculate the MI are …
Resource allocation for flexible-grid optical networks with nonlinear channel model
L Yan, E Agrell, H Wymeersch… - Journal of Optical …, 2015 - opg.optica.org
In this paper, we study the joint resource allocation in flexible-grid networks based on a
nonlinear physical layer impairment model. An optimization problem is formulated to assign …
nonlinear physical layer impairment model. An optimization problem is formulated to assign …
Merit of Raman pumping in uniform and uncompensated links supporting NyWDM transmission
We propose a method to quantitatively evaluate the improvement of the optical signal-to-
nose ratio () enabled by Raman pumping in hybrid Raman/erbium-doped fiber amplifiers …
nose ratio () enabled by Raman pumping in hybrid Raman/erbium-doped fiber amplifiers …