Study of the ROF system based wavelength interleaving and double sideband modulation with carrier suppressed

In this paper we propose a wavelength interleave based on double sideband carrier suppressed (ODSB-SC) radio frequency (ROF) optical fiber transmission system, using Mach-Zehnder modulator (MZM) to realize the ODSB-CS modulation signal and two Mach-Zehnder interferometer (MZI) to separate the three optical RF signals. The principle of the system is analysised. Using photon simulation software, we design out a 10GHz, 15GHz and 25GHz three RF signal through the wavelength in ROF system multiplexing ODSB-SC, The spectrum of the three optical RF signal multiplexing and demultiplexing is given. The Q value and eye pattern is given. The delay time of the MZI to influence the performance of RF multiplexed signals is analysed. it is concluded that the optimal delay time to the two MZI is 0.1ns and 0.06ns, respectively.