基于微波磁光效应的射频相关处理研究  

Research on RF Correlation Processing Based on Microwave Magneto-Optic Effects

作　　者：罗成友[1] 武保剑[1] 

机构地区：[1]电子科技大学宽带光纤传输与通信网技术教育部重点实验室,四川成都610054

出　　处：《磁性材料及器件》2009年第1期16-20,共5页Journal of Magnetic Materials and Devices

基　　金：国家自然科学基金资助项目(60671027)

摘　　要：根据磁光微扰理论研究了小信号情形下携有信息的静磁前向体波与导波光的作用,分析了基于磁光效应的空间积分相关过程,给出了相关输出结果与磁光衍射效率的定量关系,可为空间积分磁光相关器的优化设计提供理论指导。对单极性归零码的磁光相关过程进行了仿真,计算表明:(1)增加射频信号的峰值功率,可以增加相关检测电流;(2)增加入射光功率,在一定范围内增大偏置磁场或降低射频频率有助于增大接收射频信号的动态范围;(3)减小微带线宽度可以增加磁光器件的处理增益。According to the magneto-optic （MO） perturbation theory, the interaction of guided optical waves and magnetostatic forward volume waves （MSFWs）, which are excited by small radio frequency （RF） signals modulated by data information, is theoretically studied. The process of space-integrating correlation based on the MO effects is analyzed and the relation of the output of correlation detection and the MO diffraction efficiency is given, which are useful for the design and optimization of space-integrating MO correlators. It is shown by taking return-to-zero codes for example that, （1） the correlated current can be raised by increasing the peak power of RF signal; （2） the dynamic range of received signal is dependent on the power of incident ligh, the external magnetic field and the frequency of RF signal; （3） the processing gain is improved by decreasing the width of the transducer.

关 键 词：磁光效应 磁光相关器 微扰理论 

分 类 号：O482.55[理学—固体物理] TN247[理学—物理]