研究生: |
黃俊欽 HUANG,JYUN-CIN |
---|---|
論文名稱: |
以極化保持光纖及低雙折射光纖為基礎的掃頻式極化光學同調斷層攝影術 Polarization maintain fiber and low birefringence fiber based swept source polarization sensitive optical coherence tomography |
指導教授: |
郭文娟
Kuo, Wen-Chuan |
學位類別: |
碩士 Master |
系所名稱: |
光電工程研究所 Graduate Institute of Electro-Optical Engineering |
論文出版年: | 2012 |
畢業學年度: | 100 |
語文別: | 中文 |
論文頁數: | 50 |
中文關鍵詞: | 極化光學同調斷層攝影術 |
英文關鍵詞: | PSOCT |
論文種類: | 學術論文 |
相關次數: | 點閱:172 下載:6 |
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本論文提出了一套以極化保持光纖及低雙折射光纖為基礎的掃頻式極化光學同調斷層攝影術系統。我們證明了本系統的精確度可與自由光路的架構相比;而樣品端全光纖化,具有緊密及便於攜帶的優點,便於應用在臨床研究上;此外,本系統每一橫向位置只需透過一次軸向量測即可獲得背向散射光強、延遲角、快軸夾角影像,如此可以減少量測時間以及樣品變動的敏感度問題。我們也研究了樣品端光纖的線性及旋轉運動的影響,並證明使用低雙折射光纖的樣品端對於由光纖運動造成相位延遲角的影響並不明顯;然而對於由光纖運動造成快軸夾角的變化在未來應用時仍需做補償。
In this research, a polarization maintain fiber and low birefringence fiber based swept source polarization sensitive optical coherence tomography system is proposed. We demonstrate that this compact and portable OCT system based on an all fiber sample arm, with accuracy comparable to bulk optics systems, which could serve as a technology to realize PS-OCT instrument for clinical applications. Furthermore, the system enables measurement and imaging of backscattered intensity, birefringence, and fast axis angle orientation simultaneously with only one single A-scan per transverse measurement location. This can reduce measurement time and sensitivity to sample movements. We also investigated the effects of sample arm fiber in linear and rotary motion, and demonstrate that by using low birefringence fiber in sample arm, changes in phase retardation angle due to sample fiber motion is not significant. However, changes in fast axis angle due to sample arm fiber motion need to be compensated in the future.
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