An adaptive non-uniform PSK modulation scheme for elastic optical network

In this paper, we introduce a novel adaptive non-uniform PSK modulation scheme, which is capable of adjusting the amplitude of the constellation points based on the channel condition, so as to achieve flexible signal transmission and reduces the receiver complexity. Simulation results indicate that services with different quality of service (QoS) requirements can be conducted on a single optical signal according to the channel condition. And the system efficiency can be improved to its maximum while guaranteeing the acceptable error rate at the same time. The performance of the proposed scheme exhibits an enormous potential for future high-speed elastic optical network.