本文選題：光纖布喇格光柵　切入點：衍射光場　出處：《合肥工業(yè)大學》2017年碩士論文　論文類型：學位論文

【摘要】：光纖布喇格光柵(Fiber Bragg Grating,FBG)在光纖通信和光纖傳感等領域有著廣泛的應用前景。與普通傳感器相比,基于FBG的傳感器具有體積小和精度高等優(yōu)勢。另外,與傳統(tǒng)的諧振腔相比,基于FBG的諧振腔實現(xiàn)了光纖激光器的全光纖集成化,其穩(wěn)定準確的選頻特性提高了激光器輸出穩(wěn)定性,并提高了輸出功率和效率。本文分析了基于相位掩模法刻寫FBG的衍射光場,為實驗刻寫FBG提供理論指導。在此基礎上分析了軟玻璃光纖中(硫化物和碲酸鹽光纖)刻寫的中紅外波段FBG對溫度、應變以及壓力的敏感特性,并將FBG作為中紅外波段喇曼光纖激光器諧振腔進行數(shù)值模擬,實現(xiàn)喇曼激光器參數(shù)的優(yōu)化設計。本文主要研究內(nèi)容如下:一、建立相位模板寫入FBG的物理模型,利用有限元算法對其進行分析,通過改變光源類型(平面波和球面波)、入射方向以及模板刻槽深度等參數(shù)對相位模板的衍射光場進行分析比較,得出了不同條件下相位模板的衍射圖樣和刻寫FBG的最佳條件。二、根據(jù)布喇格公式,分析比較了基于硫化物和碲酸鹽光纖的Bragg光柵等中紅外FBG的溫度、應變以及壓力敏感特性,數(shù)值模擬了Bragg波長隨溫度、應變和壓力變化的特性曲線,分析了FBG在中紅外傳感應用的基本特性以及FBG傳感器的優(yōu)勢。三、基于受激喇曼散射的耦合傳輸方程,結合有限元算法和打靶法分析硫化物光纖喇曼激光器和碲酸鹽光纖喇曼激光器中Stokes光以及泵浦光的特性。通過數(shù)值模擬,直觀地分析了泵浦功率、光纖長度以及輸出端Bragg光柵的反射率對激光器輸出性能的影響,分別給出了一階和二階中紅外光纖喇曼激光器的優(yōu)化設計參數(shù)。
[Abstract]:Fiber Bragg grating has a wide application prospect in optical fiber communication and optical fiber sensing. Compared with conventional sensors, the sensor based on FBG has the advantages of small size and high precision. In addition, compared with the traditional resonator, the fiber Bragg grating has the advantages of small size and high precision. The resonator based on FBG realizes the all-fiber integration of the fiber laser, and its stable and accurate frequency selecting characteristic improves the output stability of the fiber laser. The output power and efficiency are improved. In this paper, the diffraction field of FBG based on phase mask method is analyzed. On the basis of this, the sensitivity of FBG in soft glass fiber (sulfide and tellurite fiber) to temperature, strain and pressure is analyzed. FBG is used as the resonator of medium infrared Raman fiber laser to realize the optimization design of Raman laser parameters. The main contents of this paper are as follows: first, the physical model of writing phase template into FBG is established. The diffraction light field of the phase template is analyzed and compared by changing the type of light source (plane wave and spherical wave, incident direction and groove depth of the template, etc.). The diffraction patterns of phase templates and the optimum conditions for writing FBG are obtained. Secondly, according to Bragg formula, the temperature, strain and pressure sensitivity of Bragg gratings based on sulfide and tellurite fiber are analyzed and compared. The characteristic curves of Bragg wavelength varying with temperature, strain and pressure are numerically simulated. The basic characteristics of FBG in mid-infrared sensing and the advantages of FBG sensor are analyzed. Thirdly, based on the coupled transfer equation of stimulated Raman scattering, The characteristics of Stokes light and pump light in sulfide fiber Raman laser and tellurite fiber Raman laser are analyzed by means of finite element method and shooting method. The pump power is analyzed intuitively by numerical simulation. The effects of fiber length and reflectivity of output Bragg gratings on the output performance of the laser are discussed. The optimal design parameters of the first and second order medium-infrared fiber Raman lasers are given respectively.
【學位授予單位】：合肥工業(yè)大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TN253

【參考文獻】

相關期刊論文 前10條

1 郭鵬;饒云江;李登勇;龔元;Gangding Peng;吳宇;張偉利;吳慧娟;;Inscription of Bragg gratings in few-mode optical fibers[J];Chinese Optics Letters;2013年02期

2 徐偉;聶大德;;光纖光柵及電色散補償技術在光纖通信中的應用[J];應用科技;2011年09期

3 王宏亮;宋娟;馮德全;鄔華春;;應用于特殊環(huán)境的光纖光柵溫度壓力傳感器[J];光學精密工程;2011年03期

4 楊吉祥;陳東;余尚江;陳顯;;埋入式FBG應變傳感器的設計及其傳感特性研究[J];儀表技術與傳感器;2010年11期

5 李俊;吳瑾;高俊啟;;一種監(jiān)測鋼筋腐蝕的光纖光柵傳感器的研究[J];光譜學與光譜分析;2010年01期

6 劉春桐;李洪才;張志利;趙兵;;鋁合金箔片封裝光纖光柵傳感特性研究[J];光電子.激光;2008年07期

7 沈小燕;林玉池;付魯華;王為;;LabVIEW實現(xiàn)光纖光柵傳感解調(diào)[J];傳感技術學報;2008年01期

8 周智;蘭春光;歐進萍;;基于雙光纖光柵的冰壓力傳感器研究[J];實驗力學;2006年05期

9 葉青;劉峰;瞿榮輝;方祖捷;;一種基于光纖光柵的毫米波副載波光纖通信方案[J];光學學報;2006年10期

10 詹亞歌,陸青,向世清,方祖捷,王向朝;優(yōu)化光纖光柵傳感器匹配光柵解調(diào)方法的研究[J];光子學報;2004年06期

相關博士學位論文 前3條

1 秦祖軍;全光纖結構喇曼光纖激光器研究[D];電子科技大學;2009年

2 董新永;光纖光柵調(diào)諧技術、應用及寬帶可調(diào)諧摻鉺光纖激光器研究[D];南開大學;2002年

3 劉云啟;布拉格與長周期光纖光柵及其傳感特性研究[D];南開大學;2000年

相關碩士學位論文 前1條

1 劉聰;拉曼光纖激光器輸出功率特性研究[D];西南交通大學;2009年

，

本文編號：1607906