Colorless two different gigabit data access transmissions using optical double sideband suppressed carrier and optical sideband slicing

A wavelength division multiplexed (WDM) radio over fiber access network architecture, capable of simultaneously transmitting both 63 GHz wireless and 2.5 Gb/s wired data, is proposed in this paper. An optical carrier suppression effect and multiplexing of a 50 GHz spaced arrayed waveguide grating are employed to generate a 63 GHz millimeter-wave signal based on WDM. These techniques allow the proposed scheme to simultaneously transmit both wireless and wired data. For full colorless operation, a reflective semiconductor optical amplifier is used at the central office and base station. Error-free simultaneous transmissions [wired data: bit error rate (BER) of 10^-12, wireless data: BER of 10^-9] of 2.5 Gb/s wired data and 1.25 Gb/s wireless data are achieved. Various impacts of the downlink transmission on the performance of uplink data are investigated with the proposed scheme.