HUO Chao,LIU Lin,BAI Hui-feng.Physical impairments awareness based virtual network mapping strategy of elastic optical networks[J].Optoelectronics Letters,2021,17(1):36-39 Physical impairments awareness based virtual network mapping strategy of elastic optical networks Author Name Affiliation HUO Chao  Beijing SmartChip Microelectronics Technology Company Limited, Beijing 102200, China  LIU Lin  State Grid Dalian Electric Power Supply Company, Dalian 116011, China  BAI Hui-feng  Beijing SmartChip Microelectronics Technology Company Limited, Beijing 102200, China  Abstract:       As virtual networks services emerge increasingly with higher requirement of flexibility and robust, great complex challenges caused by physical-layer impairments are presented to the elastic optical networks (EON). Aimed to solve this problem, this paper proposes a physical impairment awareness based virtual network mapping stragegy of EON. The physical impairments awareness model is established, including both of linear factors and nonlinear ones. On this basis, this paper proposes a virtual network mapping strategy with detailed procedures, combined with node importance factors during the virtual network mapping procedure. Test results show that the proposed approach is able to reduce blocking rate and enhance services supporting ability of EON. Hits: 648 Download times: 19 View Full Text    Download reader