Study Of The Relationship Between Optical Network Performance And Margin

In recent years,optical networks have become an important component of Chinese basic transmission network.The capacity and spectral efficiency have been significantly improved by combining highspeed electronic technology with complex digital signal processing techniques.However,there are still many important problems with current and future transmission systems.The issue of margin has attracted attention from both researchers and industrial practitioners,as it is closely related to network performance and cost.For space division multiplexed elastic optical networks(SDM-EON),different methods have been proposed to study their relationship with margins.At the same time,however,there is still a lack of analysis of the recently proposed concept of disaggregated optical networks(DON)and the relationship between margins,which requires research on the impact of margins on optical networks.In order to solve the above problems,this paper proposes a mathematical model of considering margins for disaggregated optical network programming.At the same time,in order to quantitatively analyze the switching nodes in the space division multiplexing scenario,this paper proposes an analysis method for the cost of reconfigurable optical add-drop multiplexer(ROADM).By combining this method with disaggregated optical network scenarios,this paper proposes a margin-based recovery rate optimization method to improve network performance through the combination of scenarios and algorithms.Finally,we perform network simulation under different network conditions,and calculate the relative cost of optical networks in different scenarios,and the results show that the proposed algorithm can save more costs without reducing network performance,and can bring a recovery rate gain of 4.7%per unit cost compared with the comparison algorithm.