Design and control of highly spectrally efficient photonic networks enabled by fiber-granular routing on overlaid ring-shaped topologies
| Autor: | Hiroshi Hasegawa, Ryuta Shiraki, Paolo Monti, Ken-ichi Sato, Yojiro Mori |
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| Rok vydání: | 2021 |
| Předmět: |
Network architecture
Routing and wavelength assignment Computer Networks and Communications Computer science Wavelength-division multiplexing Node (networking) Bandwidth (signal processing) Computer Science::Networking and Internet Architecture Physics::Optics Spectral efficiency Routing (electronic design automation) Topology Network topology |
| Zdroj: | Journal of Optical Communications and Networking. 13:233 |
| ISSN: | 1943-0639 1943-0620 |
| DOI: | 10.1364/jocn.428571 |
| Popis: | We propose an ultradense wavelength-division-multiplexing (WDM) network architecture that dramatically enhances channel accommodation density to achieve extremely high spectral efficiency. The trade-offs between high spectral efficiency and severe signal impairment due to optical filtering are resolved by network optimization of the overlaid subnetworks based on fiber-granular routing and wavelength-granular add/drop operations. The spectrum narrowing induced by node operations is well controlled by the impairment-suppressing routing and wavelength assignment (RWA) method. Numerical simulations on several metro-scale network topologies verify that the proposal enhances the spectral efficiency by up to 31.0% compared to comparable dense WDM networks. |
| Databáze: | OpenAIRE |
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