An optimised resource provisioning algorithm for transparent optical core networks

Abstract

Comparing transparent optical core networks (TOCNs) to their opaque and translucent counterparts, TOC- Ns are usually thought to be more energy efficient. Because of this, they are also considered a workable solution for transport networks that need to provide extremely high bandwidth to support a wide range of services and applications. These wavelength-routed networks are spectrally inefficient due to the ensuing diverse nature of current global traffic. But the spectral efficiency and optical reach of these networks have significantly increased thanks to developments in DSP, modu- lation, and transmission impairment mitigation techniques. Thus, an orthogonal frequency division multiplexing (OFDM) based TOCN with flexible spectral resource provisioning is reviewed in this paper. We discuss how to strike a balance between spectrum efficiency and resource provisioning at the wavelength routing level. We also propose and evaluate a Q- factor based technique that takes into account different limita- tions in the physical layer. both simulation and analytical methods. Overall, the suggested architecture for the transport network is relatively more efficient in terms of both energy and spectrum utilization.