【作者】 李彬；

【导师】 于晋龙；

【作者基本信息】 天津大学 ， 信息与通信工程， 2012， 硕士

【摘要】 本文以光载无线(RoF)技术为中心,以基于光注入FP-LD的无本振RoF上变频技术和基于光时域压缩和偏振延时干涉仪的RoF副载波倍频技术为重点进行研究。1.介绍了微波光子技术、现有光纤和无线接入网以及RoF技术三者的发展现状和应用前景,阐述了FP-LD的基本原理和输出模式问题,给出了FP-LD主要性能参数的表示方程和物理意义以及FP-LD四项基本特性的说明。2.提出了一种基于光注入FP-LD的无本振RoF上变频技术,利用光注入FP-LD所具有的非线性动力学特性,即可对NRZ-OOK、RZ-OOK信号光进行无本振RoF上变频。通过对光注入FP-LD所具有的非线性动力学特性进行理论分析,说明了利用其实现无本振RoF上变频的基本原理；并通过实验证明了注入的NRZ-OOK和RZ-OOK信号光均可以上变频成为副载波强度调制信号。3.以无本振RoF上变频技术为基础,利用NRZ-OOK信号光注入FP-LD所产生的副载波强度调制信号具有的正啁啾特性,使用负色散介质来补偿正啁啾从而实现了副载波信号的时域压缩,得到了脉冲形式的副载波信号,而后利用偏振延时干涉仪滤除副载波信号的一阶频率分量,得到副载波信号的二阶频率分量,实现了副载波信号的倍频,从而获得了毫米波波段的副载波强度调制信号。更多还原

【Abstract】 This paper is centering on Radio over Fiber (RoF) technology, and is focusing on researches of RoF frequency up-conversion without local oscillator based on optical injection into FP-LD, and is alse focusing on researches of RoF signal frequency multiplication based on optical time-domain compression & polarization delay interferometer.1. Introduce the development status and application prospects of microwave photonics, exisiting optical & wireless acess network and RoF technology. Explane the basic principles and output modes of FP-LD. Then give out expressed equations and physical meanings of FP-LD’s main performance parameters, and describe FP-LD’s four basic characteristics.2. Propose a technology of RoF frequency up-conversion without local oscillator based on optical injection into FP-LD. Using this technology which is based on Non-linear Dynamics System, can do RoF frequency up-conversion for NRZ-OOK, RZ-OOK signal light without local oscillator. By doing theoretical analysis for Non-linear Dynamics System, show the basic principles of using this effect to achieve RoF frequency up-conversion without local oscillator. Then it is proved by experiments that NRZ-OOK and RZ-OOK injected signal light can be frequency up-conversed into subcarrier intensity modulated signal.3. Utilising positive chirp characteristics of subcarrier intensity modulated signal which is generated by NRZ-OOK injected signal light, use negative dispersion media compensating positive chirp to achieve subcarrier signal compression in time domain, obtain the pulse form of subcarrier signal, then use polarization delay interferometer to achieve subcarrier frequency multiplication, so resulte in a subcarrier signal in millimeter wave band.更多还原