Abstract

We study the achievable rates of submarine fiber systems in the high-dimensional design space of variables including span length, launch power, number of spatial channels, and power feed current. We identify the regimes in which nonlinearities or power feed equipment constraints become dominant, and demonstrate that optimized system design evolves toward the linear regime as the system scales to a high number of spatial channels. We calculate the bit rate achievable by uniform and probabilistically shaped M-ary Quadrature Amplitude Modulation constellations to identify potential capacity-achieving implementations.

Theoretical investigations of weakly- and strongly-coupled multi-core fibers for the applications of optical submarine communications under power and fiber count limits

Lin Sun, Junwei Zhang, Gai Zhou, Bin Chen, Gordon Ning Liu, Yi Cai, Zhaohui Li, Chao Lu, and Gangxiang Shen
Opt. Express 31(3) 4615-4629 (2023)

Channel model and the achievable information rates of the optical nonlinear frequency division-multiplexed systems employing continuous b-modulation

Stanislav Derevyanko, Muyiwa Balogun, Ofer Aluf, Dmitry Shepelsky, and Jaroslaw E. Prilepsky
Opt. Express 29(5) 6384-6406 (2021)

Analytical results on channel capacity in uncompensated optical links with coherent detection

G. Bosco, P. Poggiolini, A. Carena, V. Curri, and F. Forghieri
Opt. Express 19(26) B440-B451 (2011)

Orthant-symmetric four-dimensional geometric shaping for fiber-optic channels via a nonlinear interference model

Bin Chen, Wei Ling, Yi Lei, Zhiwei Liang, and Xuwei Xue
Opt. Express 31(10) 16985-17002 (2023)

Advanced Space Division Multiplexing Technologies for Optical Networks [Invited]

Werner Klaus, Benjamin J. Puttnam, Ruben S. Luís, Jun Sakaguchi, José-Manuel Delgado Mendinueta, Yoshinari Awaji, and Naoya Wada
J. Opt. Commun. Netw. 9(4) C1-C11 (2017)