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利用亂相編碼與體積全像之全光學式光纖感測系統

An all-optical Fiber Sensing System Based on Random Phase Encoding in Volume Holograms

摘要


本論文主要是提出並且證實金光學式光纖感測系統的可行性。在理論上,比光纖感測器是結合了多樣光纖(Multimode Fiber)之光斑(Speckle)對於物理量改變的靈敏性與亂相編碼(Random Phase Encoding)之體積金像(Volume Hologram) 多工儲存的技術。在實驗上,我們主要討論光纖受橫向位移量的影響下,系統與光纖光斑、光纖纏繞數目及毛玻璃之間的關係。實驗結果發現若增加光斑資訊可提昇系統的訊雜比(SNR),若增加光纖纏繞數目的可提高系統的靈敏度,若加入毛玻璃有助於捉弄系統的訊雜比。最後,我們利用實驗所得的結果將系統最佳化並且真正的實現了“全光學式光纖感測系統”。

並列摘要


We have proposed what we believe the first full-optical fiber sensing system without any electronic processing. A multiple-mode fiber is used to detect external perturbation and to serve as a random phase generator. A crystal serves as the volume hologram recorder and database to provide the interconnection between a specific Incoming random phase and the corresponding output pattern, which just indicates the external perturbation on the fiber. The sensing system, including the detection of the external perturbation, the interconnection and the display of the result are all performed by optical schemes.

被引用紀錄


蔡孟芬(2006)。同軸式體積全像光碟儲存系統之研究〔碩士論文,國立中央大學〕。華藝線上圖書館。https://www.airitilibrary.com/Article/Detail?DocID=U0031-0207200917341752

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