臺灣博碩士論文加值系統

在本論文中，以自製的鋅擴散鈮酸鋰波導相位調制器( )，應用在共路徑極化內差干涉儀，作為空間旋轉角度及溶液旋光角度量測應用。同時利用LabVIEW量測平台，所開發之雙通道相位量測技術，結合光雙折相位延遲量測原理，成功開發出同步量測旋光溶液，旋光度與折射率隨溶液濃度變動之光學量測系統。
在文獻中，是使用極化光學元件旋轉，造成線性極化光在待測溶液內傳播中旋轉，量測不同濃度旋光性溶液，對於出射光其強度極值角位移之變化。在本研究中，首先由此強度量測解析法，比較旋光及非非旋光溶液之差異，從實驗可以看出，旋光溶液確實可以看出其極值有角位移，但是非旋光溶液卻沒有變化。接著探討不同波長的雷射( 、 及 )，對於量測之差異性，實驗結果顯示，使用越短波長其角度變化越明顯。
除了利用強度解析方法作為對照，研究中也自行設計不同測試盒，主要是以一斜向置入於玻璃盒之雙折平板為主體，當光入射於此待測盒時，會有穿透及反射光，在雙通道相位量測架構下，量測不同物質不同濃度的溶液，其折射率與旋光變化所造成之相位變動。而利用此方法，可以探討靜態之濃度變化造成之雙通道相位變化外。此外，也進一步研究其在動態相位量測之應用，主要是利用不同含酒精濃度之溶液，探討在揮發以及溶解擴散過程中之動態相位量測，可以看到酒精揮發與水的親水度有關，而在反射端旋光相位量測中，若在最佳之量測情形下，會有優於穿透端之相位量測敏感度。

In this thesis, a home-made Zn-indiffused lithium niobate waveguide phase modulator( ) used in a common-path polarization homodyne interferometer, which is proposed to the application of spatial roll angle and chiral solution measurements. The developed LabVIEW-based dual channel phase measurement platform combined with the measurement principles of optical birefringence phase delay and optical rotation angle, which has been applied for the synchronized measurements of optical activity and refractive index changes of chiral solutions with different concentrations.
In the literature，by utilizing the optical polarized devices, the rotation of linear polarization while passing through a tested solution will cause a angle shift of peak intensities in the difference concentrations of chiral solutions. In our research, first, comparison of angle shifts of peak intensity for chiral and achiral solutions was studied by using the intensity analysis methodology. According to the experiment results, angle shifts of peak intensity are essential for the chiral solutions. However, the angle shifts of peak intensity are unchanged for the achiral solutions. Then, we explore the measured laser wavelengths dependence on the angle shifts, and the experiment results show that shorter laser wavelength would be more obvious.
In order to compare the intensity analysis methodology, the dual channel phase metrology scheme is proposed. The different test box is designed by inserting a birefringent plate in various geometrical glass boxes. When the tested light passes through the box, it will be divided into two different ways, transmitted and reflected lights. The phase variations of transmitted and reflected lights can be used to measure the changes of refractive index and optical rotation angle of chiral solutions with different concentrations, respectively. This dual channel setup is adopted to evaluate the static measurements of different glucose and slat concentrations in DI water. Besides, the dynamic dual-channel phase measurements are performed for the different solutions with alcohol composition. The real time phase variations caused by the diffusion and evaporation in the alcohol included liquid can be monitored easily. It is useful to observe the relationship between evaporation and hydrophilicity of alcohol in the water mixed solutions. The phase measurement sensitivity of the reflected channel would be better than the transmitted one under the best experiment conditions.

中文摘要 I
Abstract II
誌謝 IV
表目錄 VIII
圖目錄 IX
目錄 V
第一章 緒論 1
1.1 研究背景 1
1.2 文獻回顧 2
1.2.1 聲光調制光學外差干涉旋光量測系統 2
1.2.2 電光調制光學外差干涉旋光量測系統 3
1.2.3 電光調制外差干涉旋光度與折射率量測系統 4
1.3 研究動機 5
第二章 基本原理 6
2.1 鈮酸鋰晶體特性 6
2.2 電光效應 7
2.3 相位調制內差光學干涉儀簡介 9
2.3.1 波導相位調制器 10
2.3.2 相位調制內差光學干涉系統 11
2.4 溶液折射率量測之原理 13
2.5 旋轉角量測之原理 15
2.6 旋轉角度之原理 14
第三章 鋅擴散鈮酸鋰波導相位調制器製程 17
3.1 晶片切割 17
3.2 波導層製作 18
3.2.1 晶片清洗、烤乾 18
3.2.2 光阻塗怖 19
3.2.3 光阻軟烤 19
3.2.4 曝光 20
3.2.5 顯影 20
3.2.6 薄膜蒸鍍 21
3.2.7 掀離 22
3.2.8 膜厚量測 23
3.2.9 熱擴散 23
3.2.10 晶片研磨、拋光 24
3.2 緩衝層製作 25
3.3 電極層製作 26
3.4 波導量測 27
3.4.1 光場分布量測 27
3.4.2 量測 28
第四章 結果與討論 30
4.1 量測系統穩定度探討 30
4.1.1 相位穩定性量測 30
4.1.2 入射光極化安排對於旋轉角量測的影響 31
4.1.3 角度對相位量測穩定度之影響 32
4.1.4 析光器角度對旋轉角度量測之影響 33
4.2 旋轉角量測 相位解析法 34
4.2.1 相位變動與旋轉角模擬 34
4.2.2 相位變動與溶液旋光度模擬 36
4.2.3 量測葡萄糖之相位變化 38
4.2.4 旋光溶液濃度及溫度變動之動態相位量測 40
4.2.5 使用鎖相放大器量測葡萄糖之相位變化 42
4.3 旋轉角量測 強度量測解析法 44
4.3.1 波片旋轉強度量測法 44
4.3.2 析光器旋轉強度量測法 46
4.4 單通道溶液濃度量測 光雙折感測原理 49
4.4.1 入射光固定下相位與濃度關係量測 50
4.4.2 入射光掃描不同溶液與相位變化量測 52
4.5 雙通道相位量測系統在溶液濃度量測之應用 53
4.5.1 雙通道相位量測架構 53
4.5.2 不同待側盒 葡萄糖溶液相位量測 54
4.5.3 不同待側盒 鹽水溶液相位量測 59
4.5.4 盒子量測不同種類的溶液與濃度 65
4.5.5 盒子量測不同濃度果糖溶液 69
4.6 雙通道旋光及折射率相位變動模擬 74
4.7 混合溶液之動態相位量測 77
4.7.1(a) 酒精 鹽水混合液揮發量測 77
4.7.1(b) 酒精 葡萄糖混合液揮發量測 78
4.7.2 葡萄糖滴入去離子水之溶解擴散相位變化 80
4.7.3 酒精滴入去離子水及葡萄糖溶液之相位變化 81
第五章 結論 83
參考文獻 86

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