基于光纤无线通信(ROF)的无线网络被认为是提供高带宽、交互式和多媒体无线通信服务很有前景的实现方式,但目前毫米波频段的光纤无线通信系统都存在色散严重或基站结构复杂等问题。设计完成了一个全双工60 GHz的光纤无线通信系统,利用双光源技术和60 GHz的电吸收收发器(EAT)分别在下行和上行链路实现单波长和双波长调制,完成基站的探测、调制、射频上变频和下变频四种功能,在基站中实现了电吸收收发/混频器(EATX),从而避免了制作电吸收收发/混频器件,同时也解决了光纤无线通信系统中常见的色散和基站结构复杂等问题。

Wireless networks based on radio over fiber (ROF) technologies have been proposed as a promising solution to meet the future demand on broadband, interactive and multimedia services over wireless media. However, millimeter-wave band signals suffer from the dispersion problem in fiber, and the structure of base station is complex. A full-duplex 60 GHz band ROF system employing a 60 GHz electroabsorption transceiver (EAT) together with a dual-lightwave technique is reported. By realizing single- and dual-wavelength modulation in downlink and uplink respectively, a base station with detection, modulation and frequency up/down-conversion functions which acts as a electroabsorption transceiver/mixer is obtained. Simultaneously, its chromatic dispersion is small and base station structure is simple.