毫米波光载射频系统研究的新进展  

Research Progress in Millimeter-Wave Radio on Fiber Systems

作　　者：林如俭[1] 陈翔[1] 张林[1] 宋英雄[1] 叶家骏[1] 李迎春[1] 

机构地区：[1]上海大学特种光纤与光接入网省部共建重点实验室,上海200072

出　　处：《上海大学学报（自然科学版）》2011年第4期368-378,共11页Journal of Shanghai University:Natural Science Edition

基　　金：国家自然科学基金资助项目(60877053);上海市科技发展基金资助项目(08DZ150010F)

摘　　要：论述毫米波光载射频(radio over fiber,RoF)系统研究的新进展.发展了基于光学倍频(optical frequencymultiplication,OFM)概念的毫米波光学生成理论与技术,包括通过电光调制器的高阶光波边模形成、光探测器自外差射频(radio frequency,RF)产生方法的推导、双向毫米波RoF系统的设计等;提出中频正交频分复用(orthogonalfrequency division multiplexing,OFDM)毫米波调制的新方案,对光调制器非线性造成的OFDM信号的失真建立完整的数学模型,优化光调制度;同时,实现双向40 GHz RoF实验系统,传输速率达到100 Mbit/s.Recent progresses in the research of millimeter-wave radio on fiber （RoF） systems are reported. Based on the concept of optical frequency multiplication （ OFM）, the theory and techniques of photonic generation of millimeter-wave have been developed. These include generation of high-order optical side-modes using eletro-optic modulators, self-heterodyne radio frequency （RF） production in photo-detectors, and design of hi-directional millimeter-wave RoF systems. Intermediate frequency orthogonal frequency division multiplexing （OFDM） is used to modulate the millimeter-wave carrier. A comprehensive mathematic model has been set up to analyze nonlinear distortion in OFDM signals induced by optical modulator. Several experimental RoF systems operating at 40 GHz have been implemented, achieving a transmission rate of 100 Mbit/s.

关 键 词：光载射频 毫米波光学生成 光调制器 自外差 光纤色散 非线性失真 多电平调制 

分 类 号：TN92[电子电信—通信与信息系统]