Introducing enumerative sphere shaping for optical communication systems with short blocklengths

A Amari, S Goossens, YC Gültekin… - Journal of Lightwave …, 2019 - opg.optica.org
Probabilistic shaping based on constant composition distribution matching (CCDM) has
received considerable attention as a way to increase the capacity of fiber optical …

Does probabilistic constellation shaping benefit IM-DD systems without optical amplifiers?

D Che, J Cho, X Chen - Journal of Lightwave Technology, 2021 - opg.optica.org
Probabilistic constellation shaping (PCS) has been widely applied to amplified coherent
optical transmissions owing to its shaping gain over the uniform signaling and fine …

Net-400-gbps PS-PAM transmission using integrated AMUX-MZM

H Yamazaki, M Nakamura, T Kobayashi, M Nagatani… - Optics express, 2019 - opg.optica.org
Simple high-speed optical transmission technologies are desired for use in intra-and inter-
datacenter networks. In this study, we demonstrate simple single-carrier intensity-modulated …

Probabilistic shaping for high-speed unamplified IM/DD systems with an O-band EML

MSB Hossain, G Böcherer, T Rahman… - Journal of Lightwave …, 2023 - ieeexplore.ieee.org
Probabilistic constellation shaping has been used in long-haul optically amplified coherent
systems for its capability to approach the Shannon limit and realize fine rate granularity. The …

Adaptive coded modulation for IM/DD free-space optical backhauling: A probabilistic shaping approach

A Elzanaty, MS Alouini - IEEE Transactions on …, 2020 - ieeexplore.ieee.org
In this paper, we propose a practical adaptive coding modulation scheme to approach the
capacity of free-space optical (FSO) channels with intensity modulation/direct detection …

Probabilistically shaped 4-PAM for short-reach IM/DD links with a peak power constraint

T Wiegart, F Da Ros, MP Yankov… - Journal of Lightwave …, 2020 - ieeexplore.ieee.org
Probabilistic shaping for intensity modulation and direct detection (IM/DD) links is discussed
and a peak power constraint determined by the limited modulation extinction ratio (ER) of …

Probabilistic and geometric shaping for next-generation 100G flexible PON

R Zhang, N Kaneda, Y Lefevre… - 2020 European …, 2020 - ieeexplore.ieee.org
We investigate probabilistic shaping (PS) and geometric shaping (GS) for next-generation
flexible passive optical network (PON) systems. Our proposed scheme introduces flexible …

Capacity-achieving symbol distributions for directly modulated laser and direct detection systems

D Kim, H Kim - Optics Express, 2023 - opg.optica.org
We investigate the capacity-achieving symbol distributions for directly modulated laser
(DML) and direct-detection (DD) systems utilizing probabilistic constellation shaped pulse …

Experimental demonstration of flexible information rate PON beyond 100 Gb/s with probabilistic and geometric shaping

N Kaneda, R Zhang, Y Lefevre… - Journal of Optical …, 2022 - opg.optica.org
The application of pairwise probabilistic shaping combined with geometric shaping is
investigated for a pulse-amplitude-modulation-based intensity modulated and direct …

Mitigation of pattern-dependent effect in SOA at O-band by using DSP

K Wang, J Zhang, L Zhao, X Li… - Journal of Lightwave …, 2019 - ieeexplore.ieee.org
Semiconductor optical amplifier (SOA) is regarded as a promising candidate to amplify the
optical signal in next-generation access network, especially for O-band signal transmission …