本文利用蝕刻ITO玻璃所造成的通道來研究光在波導內的特性。當外加電壓時，液晶的光學異方性會造成折射率變化。蝕刻的ITO電極下的液晶會由於外加電壓的關係，在cell裡面形成波導。我們觀察不同通道數目下光的特性。
單條ITO通道產生梯度型折射率分佈，就如同梯度型光纖一般。蝕刻多條ITO通道，發現光在通道間會有互相耦合的現象。

In this study, we research the characteristic of light in the waveguide with etched ITO channels. The anisotropic of liquid crystal induces the index of reflection changed while applying alternative voltage. The etched ITO electrode will become waveguide in cell by applying alternative voltage. We observe the characteristic of light with different number of channels.
Single ITO channel results graded type reflection index distribution, and it is similar to graded type optical fiber. We find that the laser beams will induce coupling in channels with many etched ITO channels.

目錄
中文摘要-------------------------------Ⅰ
英文摘要-------------------------------Ⅱ
目錄-----------------------------------Ⅲ
圖目錄---------------------------------Ⅴ

第一章 導論 -------------------------1
§1-1 前言 ------------------------------1
§1-2液晶簡介---------------------------2
§1-2-1 何謂液晶------------------------2
§1-2-2 液晶的種類 ---------------------4

第二章 理論--------------------------8
§2-1 液晶的一些物理性質----------------8
§2-1-1分子排列的秩序參數----------8
§2-1-2液晶的彈性連續體理論--------10
§2-2 液晶的光電特性--------------------12
§2-3 波導的原理------------------------18

第三章 實驗裝置與步驟----------------21
§3-1材料介紹---------------------------21
§3-2樣品製作(水平配向)-----------------22
§3-3樣品檢測---------------------------25
§3-3-1 conoscopy檢測---------------25
§3-3-1 conoscopy檢測---------------30
§3-4 實驗裝置--------------------------32

第四章 實驗結果與分析----------------34
§4-1 光束入射蝕刻ITO電極---------------34

第五章 結論--------------------------44

參考文獻-------------------------------45

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