scholarly journals Impact of physical layer impairments on multi-degree CDC ROADM-based optical networks

Author(s):  
Diogo G. Sequeira ◽  
Luis G. Cancela ◽  
Joao L. Rebola
Author(s):  
Suhail Najm Al-Awis ◽  
Richard Schatz ◽  
Xiaodan Pang ◽  
Oskars Ozolins ◽  
Gunnar Jacobsen ◽  
...  

2017 ◽  
Vol 20 (2) ◽  
Author(s):  
Jurandir Lacerda Jr ◽  
Alexandre Fontinele ◽  
Igo Moura ◽  
André Soares

This paper carried out a performance evaluation study that compares two survivability strategies (DPP and SM-RSA) for elastic optical networks with and without physical layer impairments. The evaluated scenarios include three representative topologies for elastic optical network, NSFNET, EON and USA. It also analyzes the increase of blocking probability when the survivability strategies are evaluated under the realistic scenario that assumes physical layer impairments. For all studied topologies under physical layer impairments, the survivability strategies achieved blocking probability above 80%.


2017 ◽  
Vol 38 (4) ◽  
Author(s):  
Jijun Zhao ◽  
Nawa Zhang ◽  
Danping Ren ◽  
Jinhua Hu

AbstractThe recently proposed flexible optical network can provide more efficient accommodation of multiple data rates than the current wavelength-routed optical networks. Meanwhile, the energy efficiency has also been a hot topic because of the serious energy consumption problem. In this paper, the energy efficiency problem of flexible optical networks with physical-layer impairments constraint is studied. We propose a combined impairment-aware and energy-efficient routing and spectrum assignment (RSA) algorithm based on the link availability, in which the impact of power consumption minimization on signal quality is considered. By applying the proposed algorithm, the connection requests are established on a subset of network topology, reducing the number of transitions from sleep to active state. The simulation results demonstrate that our proposed algorithm can improve the energy efficiency and spectrum resources utilization with the acceptable blocking probability and average delay.


Sign in / Sign up

Export Citation Format

Share Document