A novel nonlinear distortion suppression method in RoF systems using optical filter

Convergence of communication and broadcasting which makes use of radio over fiber (RoF) network has been investigated. In RoF networks, although system costs can be reduced by employing sub-carrier multiplexing (SCM), it has issue that influence of nonlinear distortion becomes large. To overcome this issue, a novel method through which nonlinearity of EAM is canceled by optical filter whose output varied with optical wavelength is proposed in this paper. Results of nonlinear distortion suppression based on theoretical analysis are shown.