基于光纤布拉格光栅法布里—珀罗滤波器的多波长窄线宽光纤随机激光器

发布时间：2023-03-12 14:45

　　随机激光由无序增益介质中的多重散射形成,在近年来吸引了很多研究者的关注。在20世纪90年代,由无序的半导体粉末和有机材料形成的随机激光器被试验证实。2010年,Turitsyn等人提出了一种基于单模光纤(SMF)中极弱的随机瑞利散射(RS)的新型随机激光器—随机分布反馈光纤激光器(RDF-FLs)。随着这一全新概念的提出,出现了大量关于这种新型激光器的试验和理论方面的研究。其中多波长窄线宽光纤随机激光器由于在波分复用、高分辨率光谱仪、光纤传感有巨大的应用潜力,引起了广大研究学者的兴趣。本文利用标准单模光纤(SMF)来构建半开腔型随机激光结构,在其中加入FBG-FP作为滤波器,从而实现了一种多波长窄线宽光纤随机激光器。首先,本文利用标准单模光纤中的瑞利散射提供随机分布反馈,同时利用掺铒光纤(EDF)提供增益,实现半开腔型宽带随机激光输出。然后本文在半开腔型随机激光结构中加入FBG-FP,FBG-FP作为一种窄线宽、多波长滤波器,所产生的光纤随机激光经过滤波器就可以实现一种多波长、窄线宽的随机激光输出。这里实现了一种波长数目超过10个、线宽小于0.01 nm的光纤随机激光输出。后续我们将利...

【文章页数】：72 页

【学位级别】：硕士

【文章目录】：
摘要
ABSTRACT
Chapter 1 Introduction
    1.1 Research Background and Significance
    1.2 Research Status at Home and Abroad
        1.2.1 Foreign Research Status
        1.2.2 Domestic Research Status
    1.3 Thesis main work
    1.4 Structure of the Thesis
Chapter 2 Theoretical Basics of Random Fiber Lasers
    2.1 Fiber Laser Structure and Principle
        2.1.1 Pump Source
        2.1.2 Resonant Cavity Structure
        2.1.3 Gain Medium
    2.2 Random Fiber Laser Theory
        2.2.1 Random Fiber Laser Generation
        2.2.2 Scattering
    2.3 Gain Mechanism
        2.3.1 Raman Amplification theory
        2.3.2 Erbium doped fiber amplification theory
        2.3.3 Laser Generation
    2.4 Summary
Chapter 3 Theoretical Basic of the Key Components
    3.1 Theoretical Basic of the FBG and FP
        3.1.1 Fiber Bragg Grating (FBG)
        3.1.2 Fabry-Perot (FP)
    3.3 Theoretical Basic of the WDM
        3.3.1 WDM Systems
    3.4 Theoretical Basic of the Optical Coupler
    3.5 Theoretical Basic of the Optical Isolator
        3.5.1 Theory of Optical Isolator
    3.6 Theoretical Basic of the Optical Power Meter
    3.7 Theoretical Basic of the OSA
    3.8 Summary
Chapter 4 Realization of Tunable Multi-Wavelength RFL
    4.1 Experimental Test of The Reflector and Filter
    4.2 The Generation of Narrow Linewidth Random Fiber Laser
    4.3 Realization of Tunable Multi-Wavelength Narrow Linewidth RFL
    4.4 Summary
Chapter 5 Conclusions
    5.1 Summary
    5.2 Future Work
Acknowledgements
References



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