Bidirectional Gigabit Millimeter-Wave Wavelength Division Multiplexed-Radio over Fiber Link Using a Reflective Semiconductor Optical Amplifier

Abstract

We propose a new bidirectional gigabit mm-wave wavelength division multiplexed-radio over fiber link which shares the same wavelength. As the downlink, the central station transmits a 30GHz single sideband wireless signal which is modulated 1.25Gbps and also transmits a remote 32GHz local oscillator for down-conversion of a uplink wireless signal by using a mach-zehnder modulator and a fiber bragg grating. As the uplink, the base station transmits a down-converted 1.25Gbps wireless signal by using a reflective semiconductor optical amplifier. We achieve a BER<10^-9 in the downlink at -14.05dBm and uplink at -12.5dBm after 20km transmission.