Performance analysis of a full-duplex photonic 60 GHz wireless-GbE system

In this paper, the performance of a photonic full-duplex 60 GHz wireless system is characterized. The proposed photonic 60 GHz wireless system adopts the photonic upconversion technique incorporating crossabsorption modulation in the multiple quantum well-electroabsorption modulator (MQW-EAM) for Gigabit-Ethernet (GbE) network application. The system performance is characterized by measuring the carrier-to-sideband power ratio and the bit-error rate (BER) changes for different pump wavelengths and bias conditions of the MQW-EAM. The highest modulation depth is obtained at the bias voltage of -0.8 and -0.9 V for 1550 and 1560 nm wavelength, which guarantees error-free transmission of the GbE signal over the photonic 60 GHz wireless system. The BER of the photonic 60 GHz wireless link is also dependent on the modulation depth changes incurred by the wavelength and the bias-voltage variations.