二进制编码微波信号光子学生成研究

Study on the photon student of the binary encoding microwave signal

摘要:(摘要内容经过系统自动伪原创处理以避免复制,下载原文正常,内容请直接查看目录。)

跟着无线传输体系的成长,人们对高速度编码旌旗灯号的需求愈来愈高。与电域调制进程中微波旌旗灯号遭到的诸多限制比拟,在光域中生成微波并对微波旌旗灯号停止处置具有年夜带宽、低消耗、抗电磁搅扰等长处。近几年来,人们在光子学范畴对微波旌旗灯号编码的研讨获得了诸多结果。本文就是针对光先生成编码微波旌旗灯号的计划睁开研讨。为了经由过程光域取得编码微波旌旗灯号,研讨了一种基于环形构造的相位编码微波旌旗灯号生成计划,一种基于保偏光纤光栅(PM-FBG)的二元相位编码微波旌旗灯号发生计划和一种基于光谱整形及频域-时域映照的二进制编码微波旌旗灯号发生计划。详细研讨内容以下:剖析了非相关光完成频域-时域映照的道理,并对微波光子学中若何应用该道理停止了论述。剖析注解,时域上脉冲宽度仅与频域上滤波带宽及一阶色散介质的色散系数有关。引见了现阶段光子学发生二元相位编码微波旌旗灯号计划,研讨了两种光生相位编码微波旌旗灯号计划,并睁开实际和仿真研讨。一种是基于环形构造的相位编码微波旌旗灯号生成计划,其道理是经由过程入射光在环形构造中顺逆时针偏向上的分歧调制方法,可在光耦合器输入端获得分歧功率的正负1阶相位调制边带,经与载波拍频后,可获得绝对应的相位旌旗灯号,经由过程对DP-MZM的偏置电压掌握,可获得相位编码旌旗灯号;另外一种是基于PM-FBG的二元相位编码微波旌旗灯号发生计划,其道理是PM-FBG在两个偏振态上存在分歧的反射谱,经由过程调理加载在偏振调制器上的二进制旌旗灯号选择分歧的反射谱,从而对相位调制旌旗灯号停止分歧的滤波,经由过程光电探测器(PD)拍频后获得与二进制旌旗灯号对应的相位编码微波旌旗灯号。应用OPTISYSTEM和MATLAB仿真完成了该计划。摸索研讨了一种基于光谱整形及频域-时域映照的二进制编码微波旌旗灯号发生计划,完成高频率二进制编码微波旌旗灯号输入。在该计划中,偏振调制器与偏振分束器两路中的差分群时延器件及带通滤波器构成编码可控的光谱整形模块;非相关光源经光谱整形后经由过程色散模块,完成频域-时域的映照,获得二元编码旌旗灯号。当偏振分束器的一路断开时,经由过程调理施加在偏振调制器上的电压获得二元幅度键控编码旌旗灯号(BASK);当偏振分束器两路均闭合,偏振调制器经由过程编码旌旗灯号选择分歧的光谱整形模块,获得二元频率键控编码旌旗灯号(BFSK)。应用MATLAB仿真并试验完成了该计划。

Abstract:

Along with the growth of wireless transmission system, the demand of high speed encoding signal becomes more and more high. Restrictions and electric field modulation process in microwave signal was compared in the optical domain to generate microwave and the microwave signal to stop the disposal has the advantages of large bandwidth, low consumption, anti electromagnetic interference. In recent years, people get a lot of results in the research of microwave photonics signal encoding. This paper is aimed at the research plan open to generate light encoding microwave signal. To through the process of optical domain made microwave signal coding, discussion of the a ring structure of phase coded microwave signal number generation scheme based on, a polarization maintaining fiber Bragg grating (pm-fbg) based on binary phase coded microwave signal No. occur plans and a spectral shaping and from frequency domain to time domain mapping binary coded microwave signal, based on a planned. A detailed study of the following contents: the analysis of the incoherent light complete truth from frequency domain to time domain mappings, and the microwave photonics in how to use the principle to carry on the elaboration. Analysis of time domain annotations, pulse width and frequency dispersion coefficient only on filter bandwidth and a dispersive medium on. Introduced the photonics occurred binary phase coded microwave signal, plan, research the two kinds of photoinduced phase coded microwave signal plan and open the actual and simulation study. A microwave signal is phase encoding generation plan based on the ring structure, the principle is through the process of the incident light counterclockwise on the bias modulation method differences can be obtained in the ring structure, the positive and negative differences in power input end of the optical coupler 1 order phase modulation sideband, the beat frequency and carrier, can obtain the absolute the phase signal, the bias voltage of DP-MZM master, can obtain the phase encoding signal; the other one is two yuan of PM-FBG microwave phase encoding signal occurrence scheme based on the principle is reflected differences in PM-FBG in the two polarization state of the spectrum, reflected by the choice of different process conditioning load in the polarization modulator on the binary signal spectrum, to stop the divergence on the phase modulation signal of the filter, through the process of photoelectric detector (PD) beat obtained with binary flag signal The corresponding phase encoding microwave signal. The application of OPTISYSTEM and MATLAB to complete the simulation program. Groping research a spectral shaping and from frequency domain to time domain mapping binary coded microwave signal, based on planned and completed high frequency binary coded microwave signal input. In the scheme, the polarization modulator and the polarization sub beam splitter two DGD devices and bandpass filter spectrum shaping in a controllable coding module; non source after spectral shaping through dispersion module, reflected from frequency domain to time domain to obtain binary coded signal. When the polarization beam splitter is disconnected, through the process of conditioning is applied on the polarization modulator voltage obtained binary amplitude shift keying coded signal (bask); when the polarization beam splitter, two are closed, the polarization modulator through process encoded signal choose different spectral shaping module, binary frequency shift control coded signal (BFSK). Application of MATLAB simulation and test of the completion of the plan.

目录:

摘要6-7
Abstract7-8
第1章 绪论11-16
    1.1 微波光子学研究背景及意义11
    1.2 微波信号光学生成技术国内外研究现状11-14
        1.2.1 高频微波毫米波信号生成11-13
        1.2.2 光学超宽带脉冲生成13-14
    1.3 二进制编码微波信号生成14-15
    1.4 论文研究内容和组织结构15-16
第2章 基本理论16-25
    2.1 电光外调制器原理16-20
        2.1.1 电光效应16-17
        2.1.2 电光外调制器17-20
    2.2 高双折射光纤光谱整形的原理20-23
        2.2.1 Jones矩阵及几种常见光学器件的Jones矩阵20-22
        2.2.2 高双折射光纤时延型滤波器22-23
    2.3 本章小节23-25
第3章 基于光子学方法的相位编码微波信号生成研究25-39
    3.1 微波光子学方法生成相位编码微波信号概述25-26
    3.2 基于微波光子学产生相位编码微波信号的典型方案介绍26-29
        3.2.1 基于相位调制器(PM)和平顶FBG的相位编码微波信号生成26-28
        3.2.2 基于梳状滤波器及单边带调制格式的相位编码微波信号生成28-29
    3.3 基于环形结构生成相位编码微波信号方法研究29-34
        3.3.1 双平行MZM产生抑制载波单边带信号的调制原理29-31
        3.3.2 方案设计原理及仿真31-34
    3.4 基于保偏光纤光栅生成相位编码微波信号方法研究34-38
        3.4.1 保偏光纤光栅传输特性34-35
        3.4.2 方案设计原理及仿真35-38
    3.5 本章小节38-39
第4章 基于频域-时域映射的二进制微波信号生成研究39-48
    4.1 基于非相干光频域-时域映射的光谱整形及应用39-41
    4.2 基于光谱整形及频域-时域映射生成二进制编码微波信号方案研究41-47
        4.2.1 方案设计原理及仿真41-44
        4.2.2 方案演示性实验44-47
    4.3 本章小结47-48
总结与展望48-50
致谢50-51
参考文献51-56
攻读硕士学位期间发表的论文56