光學同調斷層掃描技術於液體樣品之量測與應用

Optical Coherence Tomography applied in Liquid Sample Measurements and Applications

劉衍鋒(Yan-Feng Liu)

指導教授 ： 鄭旭志

國立虎尾科技大學/電機資訊學院/光電與材料科技研究所/碩士(2013年)

摘要

光學同調斷層掃描技術（Optical Coherence Tomography；OCT）是以低同調干涉為基礎的技術，具備非侵入式、非破壞性、高速分辨率、高速掃描及穩定的特性，利用光進入樣品由於介質的不同會產生不同的速度，當光程差小於光源同調長度時即產生干涉。在論文中將利用此系統架構對液體進行量測與分析。

本論文是利用光學同調斷層掃描技術對液體樣品進行濃度與折射率的量測，研究分為兩個系統架構，一個是基本TDOCT架構，此架構能針對不同濃度的液體進行量測，進而獲得樣品的折射率，經由此實驗證明OCT具有量測液體樣品的能力。另一個架構為3x3光纖式TDOCT系統架構，在樣品端的部分使用垂直架設的方式對液體樣品進行量測，使得量測過程更為方便且具有同時量測液體折射率與厚度的能力。

關鍵字

光學同調斷層掃描 ； 液體量測 ； 折射率與濃度

並列摘要

Optical Coherence Tomography (OCT) is based on a low-coherent interfere technology, with non-invasive, non-destructive, high resolution, high speed scanning and stable characteristics. By using of light entering the sample with different media will produce different speeds. When the optical path difference is less than the coherence length of the light, it will cause an intervention. In this paper, we will use OCT system for liquid measurements and analysis.

This paper is using the Optical Coherence Tomography in liquid sample for concentration and refractive index measurements. This research is divided into two systems architecture, and one is the basic TDOCT architecture that is for different concentrations of liquid measurements, in that way, we can obtain sample’s refractive index only. This experiment has proved that OCT has the ability to measure liquid samples.

And another is TDOCT 3x3 fiber optic OCT system. In the sample side, it takes the way of vertically mounted on the liquid samples for measurements. It makes process of measurement more convenient and has the ability of simultaneously measure thickness and refractive index of liquid.

並列關鍵字

optical coherence tomography ； liquid measurement ； refractive index and concentration

參考文獻

[17]周祐仲，2008，”利用光學同調斷層掃描儀測量液體中不同濃度以及溫度造成折射率的變化”，國立清華大學生醫工程與環境科學系碩士論文。

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