无线光互连技术发展综述

Overview of Wireless Optical Interconnection Development

人们对无线宽带通信技术的需求在近些年稳步增长。无线电波频谱的带宽限制和频带拥堵,通过微波无线网络的发展已经有了明显的改善。然而,无线光互连技术才能使得数据传输带宽达到理想的要求。作为许多无线通讯系统的最终方案,无线光互连也被选择为长期的解决策略。并且,无线光互连的大量优势还没有得到完全的发掘,许多基础性和应用性的研究还需要在实验层面和商业应用层面加以深入。国外, Gb/s的无线光传输已经在实验室中得到了验证,然而,可用的室内无线光互连系统也仅仅达到了155Mb/s的速度。下面将着重从收发系统、性能及安全性方面对无线光互连技术作一概况阐述。

In recent years, people＇s demand for wirless wide-band communication is growing stably. Because of the development of microwave wireless network, the bandwidth and frequency of radio wave are improved greatly. However, only wireless optical interconnection can meet the ideal wide-band re- quirement of data transmission. As the final schemes of many wireless communication systems, wireless optical interconnection techniques are also selected as the long-term solution strategies. Moreover, many advangtages of the wireless optical interconnection have not been fully mined and a lot of basic and application research need to be further carried out at both experimental level and commercial level. At abroad, the wireless optical transmission at Gb/s has been verified in laboratory. However, the indoor wireless optical interconnection system in use only can operate at the speed of 155Mb/s. In this paper, the transceiver, performance and security of the wireless optical interconnection technique are overviewed.