An empirical performance evaluation of an interference suppression scheme for radio over Fiber simultaneously transmitted with baseband On-Off Keying

Radio over Fiber (RoF) and 10 Gbps optical On-Off Keying (OOK) signal can be simultaneously transmitted by using the stochastic process of optical OOK as a carrier for the radio frequency (RF) signal. However, the OOK modulation interferes with the RF signal. In this paper, an interference suppression scheme is proposed. The improvement in terms of error vector magnitude (EVM) is discussed from theoretical analysis and computer simulation. The proposed interference suppression scheme can be implemented using an analog electronic circuit containing a rectifier. The experiment shows that the proposal improves EVM.