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研究生:林志鴻
研究生(外文):Lin, Chih-Hung
論文名稱:基於圖案變化之平面傾斜檢測應用在同軸式全像資料儲存系統
論文名稱(外文):Plane Inclination Detection Based on the Patterns Variation for Collinear Holography Data Storage Systems
指導教授:鄭泗東
指導教授(外文):Cheng, Stone
學位類別:碩士
校院名稱:國立交通大學
系所名稱:機械工程學系
學門:工程學門
學類:機械工程學類
論文種類:學術論文
論文出版年:2010
畢業學年度:98
語文別:中文
論文頁數:75
中文關鍵詞:傾斜檢測全像資料儲存系統
外文關鍵詞:inclination detectionholographic data storage system
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光碟片在轉動時,碟片震動會造成左右搖晃而有些微的傾斜。此時,光束與碟片的關係不再是垂直角度,由於布拉格條件的限制,使得資料頁無法準確的被儲存與讀取至全像片上。因此如何有效檢測出碟片傾斜的角度、方向&;#63845;成為當前的研發課題。本文基於碟片傾斜對全像儲存系統的影響,提供一種新的檢測方法,利用記錄於資料點周圍的微型圖案偏移角度來估測實際光碟因轉動所傾斜的角度,透過計算圖案面積變化的大小,可檢測此平面的傾斜方位及角度,可取代原本系統中的PSD(position sensitive detector),使得全像資料儲存系統精簡化。
In the rotating disk, the disk vibration causes irregular shaking which made the disk slightly inclined. When disk inclination occurs, the angle between the reference beam and the media is changed, thus the data cannot be recorded with a right angle or another data page is retrieved. The data retrieval in the holographic data storage system is very sensitive to the inclined disturbance due to the Bragg condition. Therefore, how to effectively detect the angle and direction of the disk tilt became the subject of current research topics. This paper is based on the disk inclination effect towards the holographic data storage system, and provides a new detection method which locates the micro patterns that are recorded around the data pattern. The new method estimates the direction and the angle of the disk plane inclination by calculating the area variation of the micro patterns. It could simplify and replace the usage of the position sensitive detector of the original system that has resulted in the collinear holographic data storage system.
一、緒論 1
1-1 引言 1
1-2 文獻回顧 3
1-2-1 全像光學儲存技術發展 3
1-2-2 全像資料儲存系統 4
1-3 研究動機 9
1-4 論文大綱 10
二、全像相關理論 11
2-1 布拉格條件 11
2-2 耦合波理論 13
2-2-1 布拉格匹配 16
2-2-2 布拉格不匹配 18
2-3 相位疊加法 23
三、同軸式全像資料儲存系統 26
3-1 同軸式全像儲存系統 27
3-2 系統架構 29
3-2-1 光路設計的架構 30
3-2-2系統架構之元件實驗 34
3-3系統架構之元件介紹及操作 39
3-3-1主光源-藍光雷射 39
3-3-2 Relay Lens System 40
3-3-3 Spatial light modulator 43
3-3-4 Quarter-wave plate 44
3-3-5 Disc 45
四、系統實驗與分析 46
4-1 面積傾斜檢測實驗 48
4-2 估測碟片傾斜實驗 59
4-3 問題與實驗結果討論 67
五、結論與未來展望 70
六、參考文獻 71

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