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研究生:古凡
研究生(外文):KU FAN
論文名稱:基於斜角光纖光柵之聲光調變
論文名稱(外文):Acousto-Optic Modulation Based on a Tilted Fiber Bragg Grating
指導教授:劉文豐劉文豐引用關係
指導教授(外文):LIU, WEN-FUNG
口試委員:張宏鈞賴暎杰張正陽
口試委員(外文):CHANG, HUNG-CHUNLAI, YIN-CHIEHCHANG, JENG-YANG
口試日期:2018-06-28
學位類別:碩士
校院名稱:逢甲大學
系所名稱:電機工程學系
學門:工程學門
學類:電資工程學類
論文種類:學術論文
論文出版年:2018
畢業學年度:106
語文別:中文
論文頁數:49
中文關鍵詞:斜角光纖光柵聲光調變鋯鈦酸鉛
外文關鍵詞:Tilted fiber Bragg gratingPZTAcosto-Optic Modulation
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本文提出斜角光纖光柵(Tilted Fiber Bragg Grating, TFBG)之聲光調變之研究。此設計架構是利用鋯鈦酸鉛材之 (Pb(ZrTi)O3) PZT並結合訊號產生器來產生聲波源,探討在斜角光纖光柵中的聲光調變現象。此結構是利用PZT產生的垂直聲波通過水平擺放的斜角光纖光柵時,會對光纖產生震動的現象,使光纖再產生一個移動式的長週期光柵並疊加在固定的短週期光纖光柵的效應,進而把原本被耦合至反向纖殼模態的光耦合至反向纖核模態,來觀察理論與實驗結果進行分析與比較。未來可將此現象應用於光纖光柵超聲波感測器上,達到可量測超聲波之目的。
In this thesis, the investigation of the acousto-optic modulation in a tilted fiber Bragg grating is proposed. This configuration in-cludes the use of lead zirconate titanate(Pb(ZrTi)O3, PZT) to achieve the source of acoustic waves in fiber gratings. The operating principle is that the vertical acoustic waves generated by PZT passes through a horizontal fiber grating to create a travelling long period grating on the optical fiber so that the optical fiber grating will superimpose the travelling long period grating to create the acousto-optic modulation for monitoring the coupling between the core mode and the cladding modes. The experimental results demonstrated the acousto-optic modulation in different tilting angles of FBGs with different coupling efficiencies. In the future, this phenomenon can be applied in the FBG vibration sensor to achieve the purpose of measuring the vibration signal.
摘 要 i
Abstract ii
目錄 iii
圖目錄 v
表目錄 vii
第一章 緒論 1
1.1 研究動機 1
1.2 研究目的 1
1.3 研究方法 2
第二章 光纖光學基本原理 4
2.1 光纖簡介 4
2.2 光纖光柵簡介 6
2.2.1 布拉格光纖光柵 6
2.2.2 布拉格光纖光柵理論分析 7
第三章 斜角光柵感測器 11
3.1 斜角光柵原理 11
3.2 斜角光纖中聲光調變理論分析[10] 12
3.3 斜角光纖光柵蝕刻 14
3.4 聲光調變實驗架構 16
第四章 聲光調變實驗 18
4.1 前言 18
4.2 1度斜角光纖光柵 18
4.2.1 頻率實驗 20
4.2.2 振幅實驗 23
4.2.3 小結 26
4.3 2度斜角光纖光柵 26
4.3.1 頻率實驗 28
4.3.2 振幅實驗 32
4.3.3 小結 34
4.4 3度斜角光纖光柵 35
4.4.1 頻率實驗 37
4.4.2 振幅實驗 40
4.4.3 小結 43
4.5 總結 43
第五章 結論與未來展望 45
5.1 結論 45
5.2 未來展望 46
參考文獻 47



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