首页--工业技术论文--无线电电子学、电信技术论文--无线通信论文--光波通信、激光通信论文

长距离布里渊光时域分析系统的优化研究

Abstract第4页
Chinese abstrct第5-12页
Chapter 1 Introduction第12-19页
    1.1 Background第12-16页
    1.2 Motivation第16-17页
    1.3 Thesis contribution第17页
    1.4 Thesis organization第17-19页
Chapter 2 Light scattering in optical fibers第19-37页
    2.1 Origins of light scattering第19页
    2.2 Spontaneous and stimulated light scattering第19-20页
    2.3 Different types of scattering and their characteristics第20-21页
    2.4 Optical properties’ fluctuation and distribution第21-23页
        2.4.1 Thermodynamic approach of Scalar light scattering第22页
        2.4.2 Scalar scattering in optical fibers第22-23页
            2.4.2.1 Assumptions第22-23页
            2.4.2.2 Density variations and light scattering第23页
    2.5 Stimulated Brillouin Scattering第23-30页
        2.5.1 Intensity第25-26页
        2.5.2 Frequency Shift第26页
        2.5.3 Linewidth第26-27页
        2.5.4 Temperature Effects第27页
        2.5.5 Brillouin Scattering at Room Temperature第27-28页
        2.5.6 Acoustic waves and Brillouin scattering:第28页
        2.5.7 Thermal motion and acoustic phonons第28页
        2.5.8 Acoustics wave’s propagation第28-30页
    2.6 Electrostriction第30-32页
        2.6.1 Stimulated Brillouin scattering induced by electrostriction第31-32页
            2.6.1.1 Brillouin generator and Brillouin amplifier第31页
            2.6.1.2 Stimulated Brillouin scattering第31-32页
    2.7 Theoretical formulation of stimulated Brillouin scattering (SBS)第32-35页
    2.8 SBS power threshold第35-36页
    2.9 Summary第36-37页
Chapter 3 Limitations in long-range BOTDA第37-50页
    3.1 Fiber optic sensors第37-39页
        3.1.1 Brillouin optical time-domain analysis (BOTDA)第37-38页
        3.1.2 Principle of BOTDA第38-39页
        3.1.3 Brillouin gain and Brillouin loss scheme第39页
    3.2 Limitations in long-range BOTDA第39-49页
        3.2.1 Chromatic dispersion第39-41页
        3.2.2 Nonlinear effects (SPM, XPM, MI) in optical fibers第41-49页
            3.2.2.1 Effective susceptibility and effective refractive index第42-43页
            3.2.2.2 Effective transmission length第43页
            3.2.2.3 Effective cross-sectional area第43-44页
            3.2.2.4 Self-phase modulation (SPM)第44-46页
            3.2.2.5 Cross phase modulation (XPM)第46-48页
            3.2.2.6 Modulation instability (MI)第48-49页
    3.3 Summary第49-50页
Chapter 4 Simplex-coded-based long-range BOTDA第50-66页
    4.1 Theoretical study第50-52页
        4.1.1 Modulation formats第50-52页
            4.1.1.1 Non-return to zero (NRZ)第50-51页
            4.1.1.2 Return to zero (RZ) format第51-52页
            4.1.1.3 Comparison第52页
    4.2 Coded-BOTDA第52-58页
        4.2.1 Simplex code第52页
        4.2.2 Interest of Simplex-coding第52-53页
        4.2.3 Overview about optical pulse coding第53-58页
            4.2.3.1 Simplex-coded BOTDA第53-55页
            4.2.3.2 Simplex-coding algorithm第55-56页
            4.2.3.3 Decoding process第56-57页
            4.2.3.4 Code gain calculation第57-58页
    4.3 Experimental study第58-65页
        4.3.1 Experiment set up:第58-59页
        4.3.2 Results and discussion第59-65页
    4.4 Summary第65-66页
Chapter 5 Differential-pulsewidth-pair-Brillouin optical time domain analysis(DPP-BOTDA)第66-77页
    5.1 Theory第66-67页
        5.1.1 Advantages and disadvantages of DPP-BOTDA第67页
    5.2 Experimental study第67-76页
        5.2.1 Experimental setup第67-68页
        5.2.2 Measurement results and interpretation:第68-76页
            5.2.2.1 Two meters (2 m) spatial resolution第69-72页
            5.2.2.2 One meter (1m) spatial resolution第72-74页
            5.2.2.3 A half meter (0.5 m) spatial resolution第74-75页
            5.2.2.4 Comparative study第75-76页
    5.3 Summary第76-77页
Conclusion and future work第77-78页
References第78-82页
Appendix第82-87页
    A.1 matlab code to generate S-matrix第82-84页
    A.2 Decoding Matlab algorithm for 15bit Simplex code length第84-87页
Acknowledgements第87页

论文共87页,点击 下载论文
上一篇:短波电台个体特征识别
下一篇:基于阵列重构的分布式多载舰超视距雷达DOA估计算法研究