Comparison of Transmitter Nonlinearity Impairments in externally modulated Sigma-Delta-over Fiber vs Analog Radio-over-Fiber links

Sigma-Delta-over-Fiber and Analog-Radio-over-Fiber are compared in terms of non-linearity impairments in a transmitter with external optical modulation. The results show that Sigma-Delta-over-Fiber is more robust towards nonlinear characteristics in the modulator. © 2022 The Author(s)