Probabilistic Shaping-PAM4 for the Nonlinear Effect Suppression in HighBit Rate Short Reach Optical Transmission System
FU Yan
XIN Hai-yun
HU Wei-sheng
Abstract：SOA is a promising component in future short reach transmission system due to its low cost and easy integration, which can be extensively used for booster and pre-amplifier.However, an additional drawback of SOA is that the saturation power can be low, and SOA amplified signals suffer from a considerable spectral broadening when the input power exceeds gain saturation limit.Specifically, this nonlinear effect induced pulse distortion is larger for the higher amplitude than for the lower amplitude.Thus, aiming to solve this problem, we firstly proposed to utilize probabilistic shaping PAM4 (transmitting different amplitude levels with different probability).Fortunately, the simulation result verifies that PS-PAM4 can improve BER performance effectively compared with PAM4.
Keywords：probabilistic shapingPAM4SOA
Publication Date：2018-10-01
Online Publishing Date：2026-08-28(First online date of this platform, not the publication date of the document)
Pages：6( 1-6 )