光生脉冲无线超宽带发生器的研究  

Research on Photonic Generation Impulse Radio Ultra-wideband Generator

作　　者：李雪楠[1] 闻立群 宁提纲[1] 李晶[1] 

机构地区：[1]北京交通大学光波技术研究所,北京100044 [2]工业和信息化部电信研究院,北京100083

出　　处：《光电技术应用》2015年第1期14-17,57,共5页Electro-Optic Technology Application

基　　金：国家基础研究计划973项目(2010CB328206)资助

摘　　要：脉冲无线超宽带(IR-UWB)是超宽带技术(UWB)最经典的实现方式之一,产生脉冲宽度在亚纳秒级别,能利用具有低占空比的基带窄脉冲序列来携带信号。IR-UWB的发生器可以灵活的产生脉冲信号,并且具有体积小、质量轻、噪声小、可调性高和抗电磁干扰等优势。文中具体研究了五种IR-UWB脉冲信号的光学生成方法,分别是利用光脉冲压缩产生IR-UWB脉冲信号、基于相位调制和偏振分束器IR-UWB脉冲信号、基于相位调制和切趾光纤光栅产生IR-UWB脉冲信号、利用光学带通滤波器产生IR-UWB脉冲信号以及基于半导体激光器产生IR-UWB脉冲信号。通过对比国内外在本领域的研究成果,讨论和总结了以上几种IR-UWB的光学生成方法,并比较各种实现方法的优缺点。Impulse radio ultra-wide band （IR-UWB） is one of the most classical ultrg-wide band （UWB） imple- mentation schemes. The generated pulse width is at sub-nanosecond level, which can take advantage of baseband narrow pulse sequence with low duty ratio to carry signals. And the IR-UWB generator with the advantages of small volume, light weight, low noise, good tunability and anti-electromagnetic interference may generate pulse signals flexibly. Five IR-UWB pulse signal optical generation methods such as IR-UWB pulse signal generated by optical pulse compression, IR-UWB pulse signal based on phase modulation and polarized beam splitting system （BPS）, IR-UWB pulse signal based on phase modulation and generated by apodized fiber Bragg grating （AFBG）, IR-UWB pulse signal generated by optical band-pass filter and IR-UWB pulse signal generated by semiconductor laser are re- searched. By contrasting research results in China and foreign countries in this field, IR-UWB optical generation methods hereinbefore are discussed and summarized and the advantages and disadvantages of the methods are com- pared.

关 键 词：脉冲无线超宽带 半导体激光器 相位调制 PM-IM 

分 类 号：TN761.3[电子电信—电路与系统]