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Experimental Comparison of Probabilistic Shaping Methods for Unrepeated Fiber Transmission

Julian Renner, Tobias Fehenberger, Metodi P. Yankov, Francesco Da Ros, Soren Forchhammer, Georg Bocherer, Norbert Hanik
2017 Journal of Lightwave Technology  
This paper studies the impact of probabilistic shaping on effective signal-to-noise ratios (SNRs) and achievable information rates (AIRs) in a back-to-back configuration and in unrepeated nonlinear fiber  ...  In a detailed study of these shaping gains for the nonlinear fiber channel, four strategies for optimizing QAM input distributions are evaluated and experimentally compared in wavelength division multiplexing  ...  Alex Alvarado (TU/e) for his comments that greatly helped to improve the manuscript.  ... 
doi:10.1109/jlt.2017.2752243 fatcat:y36zulbvk5dstpsimjeskbdmsa

Experimental Verification of Rate Flexibility and Probabilistic Shaping by 4D Signaling [article]

Fabian Steiner, Francesco Da Ros, Metodi Plamenov Yankov, Georg Böcherer, Patrick Schulte, Søren Forchhammer, Gerhard Kramer
2018 arXiv   pre-print
The rate flexibility and probabilistic shaping gain of 4-dimensional signaling is experimentally tested for short-reach, unrepeated transmission.  ...  A rate granularity of 0.5 bits/QAM symbol is achieved with a distribution matcher based on a simple look-up table.  ...  Transmission Experiment Setup We experimentally investigate the 4D signaling scheme for a short-reach scenario and unrepeated transmission for 100 km, 140 km and 180 km, where the four dimensions are  ... 
arXiv:1803.06746v1 fatcat:6wv75yqzlngbxmbtqrcft362e4

Table of Contents

2017 Journal of Lightwave Technology  
Petermann 4859 Experimental Comparison of Probabilistic Shaping Methods for Unrepeated Fiber Transmission .  ...  Fibers/Cables Precise Measurement of Fiber Third-Order Dispersion Using Transfer Function of a Microwave Photonic Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  ...  Leap-Frog Continuous-Discontinuous Galerkin Time Domain Method for Nanoarchitectures With the Drude Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  ... 
doi:10.1109/jlt.2017.2781430 fatcat:ls2jl4k2i5fnpbrio2m5hzyv3q

Huffman-Coded Sphere Shaping for Extended-Reach Single-Span Links [article]

Pavel Skvortcov, Ian Phillips, Wladek Forysiak, Toshiaki Koike-Akino, Keisuke Kojima, Kieran Parsons, David S. Millar
2020 arXiv   pre-print
Huffman-coded sphere shaping (HCSS) is an algorithm for finite-length probabilistic constellation shaping, which provides nearly optimal energy efficiency at low implementation complexity.  ...  km of standard single mode fiber (SSMF).  ...  We thank Lumentum UK for loan of the CFP2-ACO and studentship support of Pavel Skvortcov, and Socionext for loan of the DAC/ADC DKs used in this work.  ... 
arXiv:2008.02313v1 fatcat:5hdiw2znhrcfxfzato22cwrybe

Fiber-induced nonlinearity compensation in coherent optical systems by affinity propagation soft-clustering [article]

Elias Giacoumidis, Jinlong Wei, Ivan Aldaya, Christian Sanchez, Hichem Mrabet, Liam P. Barry
2018 arXiv   pre-print
In this work, the first system-agnostic and training-data-free fiber nonlinearity compensator (NLC) using affinity propagation (AP) clustering is experimentally demonstrated.  ...  There is a tremendous need to maximize signal capacity without sacrificing energy consumption and complexity in optical fiber communications due to the rise of network traffic demand and critical latency-aware  ...  Acknowledgements The work of E.G. was emanated from EU Horizon 2020 research and innovation programme under the Marie  ... 
arXiv:1812.05600v2 fatcat:kqc2zajo4val3hbztzjq7zq3jy

PPLN-based Optical Parametric Amplification for Wideband WDM Transmission

Shimpei Shimizu, Takayuki Kobayashi, Takushi Kazama, Takeshi Umeki, Masanori Nakamura, Koji Enbutsu, Takahiro Kashiwazaki, Ryoichi Kasahara, Kei Watanabe, Yutaka Miyamoto
2022 Journal of Lightwave Technology  
In this paper, we overview the applications of OPA to WDM optical fiber transmission and explain the configurations of an OPA using 4-port PPLN modules.  ...  Furthermore, we demonstrate inter-band wavelength conversion between C-and S-bands using PPLN waveguides developed for multi-band optical transmission applications.  ...  Recently, using a probabilistically shaped (PS-) 64QAM signal, 1-Tbps/ch. full C-band WDM transmission was demonstrated over 800 km [1] .  ... 
doi:10.1109/jlt.2022.3142749 fatcat:rj57pahdvfaihgcpl36lbphlai

Toward SDM-Based Submarine Optical Networks: A Review of Their Evolution and Upcoming Trends

Charalampos Papapavlou, Konstantinos Paximadis, Dimitrios Uzunidis, Ioannis Tomkos
2022 Telecom  
Also, we report up-to-date experimental results of submarine transmission demonstrations and perform a qualitative categorization that relies on their features.  ...  Moreover, based on all latest advances and our study findings, we try to predict the future of SDM submarine optical networks mainly in the fields of fiber types, fiber counts per cable, fiber-coating  ...  Conflicts of Interest: The authors of this article declare no conflict of interest.  ... 
doi:10.3390/telecom3020015 fatcat:jhnpryku4nbtbjtkdufkkv7vne

Abstracts of the 15th Annual Meeting of the Israel Society for Neuroscience (Eilat, Israel, December 3–5, 2006)

2007 Neural Plasticity  
The Israel Society for Neuroscience (ISFN) was founded in 1993 by a group of Israeli leading scientists conducting research in the area of neurobiology.  ...  The meeting also offers the opportunity for the researchers to exchange information with each other, often leading to the initiation of collaborative studies.  ...  Acknowledgments: we thank Yael Handler, Mor Nahum, and Sarit Szpiro for their contribution.  ... 
doi:10.1155/2007/73079 fatcat:6ttewkzqh5cmzb433ffyv3t5xi

Joint Meeting of the FESN (Federation of the European Societies of Neuropsychology)/GNP (Gesellschaft für Neuropsychologie) September 12-14, 2013, Berlin, Germany

2013 Behavioural Neurology  
METHOD: The RPE refers to an increase in performance for repeated items compared to unrepeated items.  ...  Memory binding was assessed by presenting visual arrays of stimuli which consisted of shape-colour relations (shape-colour pairs) or shapecolour conjunctions (coloured shapes).  ...  Both types of binding were examined in a working memory (WM) task using the same (non-spatial) fea-tures: shape and color.  ... 
doi:10.3233/ben-139900 pmid:28149002 pmcid:PMC5215690 fatcat:f4olin3ogfg7zlznht4ryjbtym

Joint Meeting of the FESN (Federation of the European Societies of Neuropsychology)/GNP (Gesellschaft für Neuropsychologie) September 12–14, 2013, Berlin, Germany

2013 Behavioural Neurology  
METHOD: The RPE refers to an increase in performance for repeated items compared to unrepeated items.  ...  Memory binding was assessed by presenting visual arrays of stimuli which consisted of shape-colour relations (shape-colour pairs) or shapecolour conjunctions (coloured shapes).  ...  Both types of binding were examined in a working memory (WM) task using the same (non-spatial) fea-tures: shape and color.  ... 
doi:10.1155/2013/976782 fatcat:xln76cklwzhvne2ry4fwxm4jzm

Copy number variation of the bacteria-binding mucosal glycoprotein DMBT1: mutation rate, balancing selection and transcript length

Adel F. Alharbi
2022
Population genetics analysis was used as an indirect method to estimate the recombination rate based on the historic patterns of genetic variations among DNA sequences of natural populations.  ...  The DMBT1 gene codes for the 340kDa DMBT1 glycoprotein, also known as SALSA or salivary agglutinin, which is predominantly expressed in saliva and at mucosal surface, and binds to a wide variety of pathogens  ...  Acknowledgments I gratefully acknowledge my PhD sponsor in Saudi Arabia, the Ministry of Health (MOH), for giving me this opportunity to do my PhD and for their financial support. Thanks also to the  ... 
doi:10.25392/leicester.data.19336496.v1 fatcat:syiuhx74hnbgpofpg5dmzw66qe