On the Carrier Suppressed Optical Modulation Methods for High Capacity DWDM Systems

This paper deals with the optical carrier suppression (OCS) over optical fiber dense wavelength division multiplexing (DWDM) system considering advanced optical modulation methods, such as optical differential quadrature phase shift keying. The method of suppressing the carrier within the modulation process is the useful method to mitigate fiber nonlinear effects and thus reach better overall performance. The quantitative simulation results validate that the carrier suppression could improve the resistance of fiber nonlinear effects in the high capacity DWDM system.