隨機(jī)激光由無序增益介質(zhì)中的多重散射形成,在近年來吸引了很多研究者的關(guān)注。在20世紀(jì)90年代,由無序的半導(dǎo)體粉末和有機(jī)材料形成的隨機(jī)激光器被試驗證實。2010年,Turitsyn等人提出了一種基于單模光纖(SMF)中極弱的隨機(jī)瑞利散射(RS)的新型隨機(jī)激光器—隨機(jī)分布反饋光纖激光器(RDF-FLs)。隨著這一全新概念的提出,出現(xiàn)了大量關(guān)于這種新型激光器的試驗和理論方面的研究。其中多波長窄線寬光纖隨機(jī)激光器由于在波分復(fù)用、高分辨率光譜儀、光纖傳感有巨大的應(yīng)用潛力,引起了廣大研究學(xué)者的興趣。本文利用標(biāo)準(zhǔn)單模光纖(SMF)來構(gòu)建半開腔型隨機(jī)激光結(jié)構(gòu),在其中加入FBG-FP作為濾波器,從而實現(xiàn)了一種多波長窄線寬光纖隨機(jī)激光器。首先,本文利用標(biāo)準(zhǔn)單模光纖中的瑞利散射提供隨機(jī)分布反饋,同時利用摻鉺光纖(EDF)提供增益,實現(xiàn)半開腔型寬帶隨機(jī)激光輸出。然后本文在半開腔型隨機(jī)激光結(jié)構(gòu)中加入FBG-FP,FBG-FP作為一種窄線寬、多波長濾波器,所產(chǎn)生的光纖隨機(jī)激光經(jīng)過濾波器就可以實現(xiàn)一種多波長、窄線寬的隨機(jī)激光輸出。這里實現(xiàn)了一種波長數(shù)目超過10個、線寬小于0.01 nm的光纖隨機(jī)激光輸出。后續(xù)我們將利...

【文章頁數(shù)】：72 頁

【學(xué)位級別】：碩士

【文章目錄】：
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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