摘要
为提高太赫兹无线通信系统的传输距离,设计了带有高增益天线和波导输出光电二极管模块的光学发射器。分析了含有HEMT和不含HEMT的WG-PM输出功率与光电流、输出功率与信号频率的关系,对比了四种光学发射器的BER特性,理论计算了发射器的最大传输距离。分析结果显示:该WG-PM在120GHz时的3dB带宽大于16GHz,采用此发射器的无线通信系统传输距离可达到500m。
In order to increase the transmission distance for THz wireless communication system, it put forward an optical transmitter combining high-gain antenna and waveguide output photodiode module （WG-PM）. Then analyzing differences in WG-PM with HEMT and without HEMT in following aspects： the relationship between output power and optical current, signal frequency, comparing four optical transmitters＇ BER characteristics and working out the maximum transmission distance. The results show us that： output bandwidth is over 16GHz/3dB in 125GHz, and the maximum distance is up to 500m.
出处
《光通信技术》
CSCD
北大核心
2010年第5期46-49,共4页
Optical Communication Technology
