同軸式體積全像光碟儲存系統之研究

The study of collinear volume holographic storage

蔡孟芬(Meng-Fen Tsai)

指導教授 ： 孫慶成

國立中央大學/理學院/光電科學研究所/碩士(2006年)

摘要

我們建立出同軸式體積全像光碟儲存系統之計算模型。因為讀取光與參考光的相位不匹配，即讀取光微小位移將使得繞射強度快速地衰減，因此系統將發展出具有高儲存容量的特性。當此儲存系統之訊號輸入元件為一空間調制器，此系統將擁有光學平行處理的能力，增加訊號的傳輸速度。另外，當碟片在布拉格不匹配條件下，經由使用設計過的參考光圖形將使得繞射光在觀察面上無偏移行為。
在本論文中我們研究繞射訊號之特性與系統的位移容忍度，並分析畫素間之串音，並有效的控制串音，使其對系統之影響降為最低，並期能實現且解決體積全像儲存之困難。

關鍵字

全像儲存

並列摘要

We construct the computing model of the system of the collinear volume holographic storage. Because of the out of phase between reading light and reference light, which means that the strength of diffraction will decay rapidly due to the small displacement of reading light. Therefore, this system has the property of high capacity of storage. When the element of input signals of this system is a spatial light modulator, the system would have the ability of optical parallel processing, and it can increase the transfer rate of signals. Besides, when the system is in the Bragg mismatch condition, there will be no displacement of diffracted light if we use the designed reference pattern.
In this paper, we research the property of diffracted signals and the shift tolerance of the system. We also analyze the crosstalk between pixels and control the crosstalk efficiently to reduce the influence to the system. And we hope that we can realize and solve the difficulties of volume holographic storage.

並列關鍵字

holographic storage

參考文獻

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system based on random phase encoding and volume holographic

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