实现光载无线电系统三阶交调抑制的新方案  

New Scheme of Three Order Intermodulation Suppression in Radio over Fiber System

作　　者：肖进良 蒲涛[1] 邵鑫鸿 方涛[1] 郑吉林[1] 任珂[1] 苏国瑞[1] 

机构地区：[1]解放军理工大学通信工程学院,江苏南京210007

出　　处：《中国激光》2015年第10期133-137,共5页Chinese Journal of Lasers

基　　金：国家973计划(2012CB315603)

摘　　要：光载无线电(Ro F)系统是近年来光通信研究的一个热点。抑制三阶交调从而增大无杂散动态范围(SFDR)是Ro F系统优化的重要内容。为了提高Ro F系统的动态范围,提出了一种基于光纤光栅陷波器和可调延迟线(TDL)抑制三阶交调的新方案。在对该方案理论分析的基础上,进行了实验验证。实验结果表明,该方案能有效抑制三阶交调,系统的SFDR提高了10.5 d B,且具有结构简单易实现、器件成本低的优势。Radio over fiber（Ro F） system is a research hotspot of optical communication in recent years.Suppressing the three order intermodulation and improving spurious-free dynamic range are（SFDR） important optimization objectives in Ro F system. In order to improve the dynamic range of Ro F system, a new scheme which is based on a fiber Bragg grating notch filter and a tunable delay line（TDL） to realize the three order intermodulation suppression is proposed. After theory analysis to this scheme, an experiment is made to verify it. The experimental results show that it can effectively suppress the three order intermodulation and improve the system＇s dynamic range by 10.5 d B. In addition, this scheme has the advantages of simple structure and low cost.

关 键 词：光通信 无杂散动态范围 三阶交调 光载无线电 

分 类 号：TN913.7[电子电信—通信与信息系统]