Impact of optical crosstalk in fibre-radio systems incorporating WDM

We investigate analytically and experimentally optical crosstalk effects in fibre-radio, systems incorporating wavelength-division multiplexing. Both in-band and out-of-band crosstalk are considered and the effect of the RF phase difference between the desired and crosstalk channels investigated. It is found that in-band incoherent crosstalk-induced power penalties are less severe than in conventional baseband transmission.