Abstract
This paper discusses architecture, protocol, technologies, systems, and networking testbed for software-defined elastic optical networking in temporal, spectral, and spatial domains. By exploiting the progress in elastic optical networking (EON) in temporal and spectral domains utilizing dynamic optical arbitrary waveform generation and measurement technologies, and by extending the EON concept into the spatial domain through the new orbital angular momentum-based spatial division multiplexing, we realize EON exploiting elasticity in temporal, spectral, and spatial domains (3D-EON). Routing, spectral, spatial mode, and modulation format assignment with fragmentation awareness as well as hitless defragmentation for high capacity, high quality of service, and resource-efficient networking will be pursued. OpenFlow-based 3D-EON testbed at UC Davis includes optical supervisory channel with optical performance monitoring for software-defined networking with an adaptive observe-analyze-act cycle.
Highlights
1.1 MotivationThe sustained pattern of exponential data traffic growths has completely transformed the landscape of modern telecommunication networks
Space-division multiplexing (SDM) has constantly been an alternative to time-division multiplexing (TDM) and wavelength-division multiplexing (WDM), but we must look into a new coherent optical communication method exploiting temporal, spectral, and spatial domains
As we demonstrated in [8], using a real-time performance monitoring method that spans a broad and elastic spectral width, the network can dynamically and adaptively adjust the modulation format to maximize spectral efficiency while maintaining the required quality of service (QoS) and bit error rate (BER) performance even for signals that experience time-varying physical layer impairments (QoS-aware and impairment-responsive networking)
Summary
The sustained pattern of exponential data traffic growths has completely transformed the landscape of modern telecommunication networks. Space-division multiplexing (SDM) has constantly been an alternative to time-division multiplexing (TDM) and WDM, but we must look into a new coherent optical communication method exploiting temporal, spectral, and spatial domains. This paper investigates software-defined elastic optical networking in temporal, spectral, and spatial domains for future high performance cyberinfrastructures.
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