Title :
Effect of link margin and frequency granularity on the performance of a Flexgrid optical network
Author :
Mitra, Abhijit ; Lord, Andrew ; Kar, Soummya ; Wright, Paul
Author_Institution :
Dept. of Electr. Eng., IIT Delhi, New Delhi, India
Abstract :
We show how dynamically adjustable modulation formats can be used to reduce optical path operating margins in Flexgrid networks, reverting to lower order reduced OSNR QAM if ageing occurs. Spectral savings amount to as much as 63% across a network but due to use of 64QAM, a fine frequency granularity of 6.25GHz is required.
Keywords :
optical links; optical modulation; quadrature amplitude modulation; OSNR QAM; flexgrid optical network; frequency 6.25 GHz; frequency granularity; link margin; modulation formats; optical path operating margins;
Conference_Titel :
Optical Communication (ECOC 2013), 39th European Conference and Exhibition on
Conference_Location :
London
Electronic_ISBN :
978-1-84919-759-5
DOI :
10.1049/cp.2013.1427
