Introducing 4D Geometric Shell Shaping for Mitigating Nonlinear Interference Noise

Sebastiaan Goossens; Yunus Can Gultekin; Olga Vassilieva; Inwoong Kim; Paparao Palacharla; Chigo Okonkwo; Alex Alvarado

doi:10.1109/JLT.2022.3220402

Introducing 4D Geometric Shell Shaping for Mitigating Nonlinear Interference Noise

Sebastiaan Goossens (Corresponding author), Yunus Can Gultekin, Olga Vassilieva, Inwoong Kim, Paparao Palacharla, Chigo Okonkwo, Alex Alvarado

Onderzoeksoutput: Bijdrage aan tijdschrift › Tijdschriftartikel › Academic › peer review

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Four dimensional geometric shell shaping (4D-GSS) is introduced as an approach for closing the nonlinearity-caused shaping gap. This format is designed at the spectral efficiency of 8 b/4D-sym and is compared against polarization-multiplexed 16QAM (PM-16QAM) and probabilistically shaped PM-16QAM (PS-PM-16QAM) in a 400ZR-compatible transmission setup with high amount of nonlinearities. Reach increase and nonlinearity tolerance are evaluated in terms of achievable information rates and post-FEC bit-error rate. Numerical simulations for a single-span, single-channel show that 4D-GSS achieves increased nonlinear tolerance and reach increase against PM-16QAM and PS-PM-16QAM when optimized for bit-metric decoding (RBMD). In terms of RBMD, gains are small with a reach increase of 1.7% compared to PM-16QAM. When optimizing for mutual information, a larger reach increase of 3% is achieved compared to PM-16QAM. Moreover, the introduced GSS scheme provides a scalable framework for designing well-structured 4D modulation formats with low complexity.

Originele taal-2	Engels
Artikelnummer	9941172
Pagina's (van-tot)	599-609
Aantal pagina's	11
Tijdschrift	Journal of Lightwave Technology
Volume	41
Nummer van het tijdschrift	2
DOI's	https://doi.org/10.1109/JLT.2022.3220402
Status	Gepubliceerd - 15 jan. 2023

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Publisher Copyright:
IEEE

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10.1109/JLT.2022.3220402

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Fundamentals of the Nonlinear Optical Channel
Alvarado, A., Liga, G., Barreiro, A., Willems, F. M. J., Sanders, R., Alvarado, A., Barreiro, A., Sheikh, A., Goossens, S., de Jonge, M., Gültekin, Y. C., Jaffal, Y., Oliari, V. & Ramachandran, V.
1/01/18 → 30/06/23
Project: Onderzoek direct
SHY-FEC: Shaped Hybrid Forward Error Correction
Alvarado, A., Lee, J., Gültekin, Y. C., de Jonge, M., Sanders, R., Barreiro, A., de Jonge, M. & Özvarış, I.
1/01/21 → 31/12/22
Project: Onderzoek direct

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title = "Introducing 4D Geometric Shell Shaping for Mitigating Nonlinear Interference Noise",

abstract = "Four dimensional geometric shell shaping (4D-GSS) is introduced as an approach for closing the nonlinearity-caused shaping gap. This format is designed at the spectral efficiency of 8 b/4D-sym and is compared against polarization-multiplexed 16QAM (PM-16QAM) and probabilistically shaped PM-16QAM (PS-PM-16QAM) in a 400ZR-compatible transmission setup with high amount of nonlinearities. Reach increase and nonlinearity tolerance are evaluated in terms of achievable information rates and post-FEC bit-error rate. Numerical simulations for a single-span, single-channel show that 4D-GSS achieves increased nonlinear tolerance and reach increase against PM-16QAM and PS-PM-16QAM when optimized for bit-metric decoding (RBMD). In terms of RBMD, gains are small with a reach increase of 1.7% compared to PM-16QAM. When optimizing for mutual information, a larger reach increase of 3% is achieved compared to PM-16QAM. Moreover, the introduced GSS scheme provides a scalable framework for designing well-structured 4D modulation formats with low complexity.",

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Introducing 4D Geometric Shell Shaping for Mitigating Nonlinear Interference Noise

Samenvatting

Bibliografische nota

Toegang tot document

Andere bestanden en links

Vingerafdruk

Projecten

Fundamentals of the Nonlinear Optical Channel

SHY-FEC: Shaped Hybrid Forward Error Correction

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