Analyses of Optical Emitter Performance in Terehertz Wireless Communication System

To resolve the limitation of information safety and transmission speed in existing communication system, it applied the modular design method to design optical-electric combined THz wireless communication system framework, and determined 125GHz carrier frequency. Aiming at the core component optical emitter uni-traveling-carrier photodiode (UTC-PD) in THz wireless communication system, it analysed the relationship between output power, bandwidth and input signal types, and determined the emitter bandwidth by experiment. The result shows that the transmission speed in the system is able to reach 3.0Gbps when BER is less than 10-10.