Abstract
We review recently proposed metrics, Q availability and signal-to-noise ratio (SNR) availability, based on statistical performance of optical signals, for modulation format assignment in network provisioning. These metrics assign a modulation format aiming to maximize spectral efficiency while satisfying the specified service availability. Q availability is suitable for tunable modulations with a discrete data rate based on M-ary quadrature amplitude modulations (mQAMs), while SNR availability is more suitable for fine-tunable modulations such as time-domain hybrid mQAM or a probabilistically shaped signal as well as discrete mQAMs. We also present a new guideline, to the best of our knowledge, on how to estimate network capacity without full network simulations when fine-tunable modulations are provisioned using SNR availability. We apply this guideline on three different network topologies and show 18.7% to 35.7% capacity gains with probabilistically shaped signal over mQAMs. SNR availability serves as a useful metric for provisioning in future optical networks adopting fine-tunable modulations.
© 2019 Optical Society of America
Full Article | PDF ArticleMore Like This
Jasper Müller, Gabriele Di Rosa, Ognjen Jovanovic, Mario Wenning, Achim Autenrieth, Jörg-Peter Elbers, and Carmen Mas-Machuca
J. Opt. Commun. Netw. 16(5) B71-B80 (2024)
João Pedro, Nelson Costa, and Sílvia Pato
J. Opt. Commun. Netw. 12(2) A123-A134 (2020)
Haibin Huang, Shanguo Huang, Shan Yin, Min Zhang, Jie Zhang, and Wanyi Gu
J. Opt. Commun. Netw. 8(10) 726-733 (2016)