電調變液晶波導

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姓名

粘珊綺(Shan-Chi Nien) 查詢紙本館藏

畢業系所

光電科學與工程學系

論文名稱

電調變液晶波導
(Electrically Tunable Liquid Crystal Waveguides)

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摘要(中)

本論文主要是在中空光波導中灌注液晶E7形成液晶核心光波導，由於液晶分子的排列情形會受外加電場的影響而改變，利用此種可調變的特性與波導作結合，期望將波導變為可調變的元件。
本文所使用的液晶波導膜層結構有兩種，一種為SiO2膜層，另一種為運用非晶相矽與氮化矽兩種材料所組成的多層膜結構即布拉格反射鏡，其分別利用全反射與干涉原理將光侷限於液晶波導中，操作波段皆為1550 nm。在膜層設計上，我們利用傳遞矩陣法決定膜層結構之後，再藉由光束傳播法(Beam Propagation Method)模擬計算液晶波導的侷限效果，由模擬的結果得知：SiO2膜層波導無論在TE或TM模態下都具有良好的侷限效果，而多層膜結構波導在TM模態下當液晶核心折射率為no時侷限效果較ne好，因此期望利用此結果達到調變的作用。
在量測方面，無論入射何種偏振光，SiO2膜層波導輸出端的強度隨著外加電壓的上升而減弱，當外加電壓為4~5VPP時，輸出端的強度最弱其衰減強度達到30dB，可應用於光開關。藉由量測各個電壓下液晶波導的穆勒矩陣(Mueller matrix)並對矩陣作極化分析，幫助我們了解液晶波導的極化特性。而在多層膜結構波導方面，由於波導的耦合損耗與對TM模態的侷限效果較為不佳，因此結果不如預期。

摘要(英)

In this study, we fabricate the liquid crystal waveguides by infiltrating liquid crystal E7 into hollow waveguides (HWGs). The reorientation of the high susceptibility of liquid crystals (LCs) molecular is achieved by applying the external fields to change the optical characterization of the liquid crystal waveguides.
We fabricate two types cladding structures of liquid crystal waveguides. By using the total internal reflection (ITR), the first structure is based on the waveguide in which the cladding layer is SiO2 layer. In the second structure, the cladding layer is amorphous silicon/silicon nitride (Si/Si3N4) multilayer. The wavelength of the launched light into the waveguides is 1550nm. We design the cladding structures and the light propagation in liquid crystal waveguides by the transfer matrix method and by beam propagation method, respectively. The simulation results show that the SiO2-cladded waveguide provides a good confinement for the TE and TM modes. The waveguides with multilayer provide better confinement for the refractive indices of LCs no than the refractive indices ne.
By applying external voltage to the SiO2-cladded waveguide, the output intensity decreases with voltage. This phenomenon is polarization-independent. The devices can serve as an electrically tunable liquid crystal switch with over 30dB attenuation at 4~5Vpp. Moreover, we also measure the Mueller matrices of SiO2-cladded waveguide under different voltages to understand the polarization properties.

關鍵字(中)

★ 液晶
★ 中空光波導
★ 電調變

關鍵字(英)

★ liquid crystal
★ hollow waveguides
★ electrooptic effect

論文目次

摘要......................................................I
Abstract.................................................II
致謝....................................................III
目錄.....................................................IV
圖目錄..................................................VII
表目錄...................................................XI
第1章緒論................................................1
1.1 光波導................................................2
1.2 液體核心光波導(Liquid-core waveguide).................3
1.2.1 利用全反射原理的液體核心光波導......................4
1.2.2 利用干涉原理的液體核心光波導........................5
1.2.3 液晶波導............................................8
1.3結論..................................................12
第2章基本原理...........................................14
2.1 光波導設計原理 .......................................14
2.1.1 傳遞矩陣...........................................14
2.1.2 光束傳播方法(Beam Propagation Method, BPM).........19
2.2 液晶簡介.............................................21
2.2.1 何謂液晶...........................................22
2.2.2 液晶的分類.........................................23
2.2.3 液晶之雙折射性(Birefringence)......................24
2.2.4 介電常數異向性(Dielectric anisotropy, Δε)........27
2.3 偏振光學原理.........................................28
2.3.1 光的偏振態與表示法.................................28
2.3.2 史托克參數(Stokes Parameter)與穆勒矩陣(Mueller Matrix)..................................................31
2.3.3 穆勒矩陣(Mueller matrix)之極化分解.................34
2.4 結論.................................................39
第3章液晶核心波導設計與模擬.............................40
3.1膜層設計..............................................40
3.1.1 SiO2膜層結構.......................................40
3.1.2 (Si/Si3N4)多層膜堆結構.............................42
3.2 液晶波導模擬與分析...................................45
3.3 結論.................................................49
第4章液晶核心光波導製程與量測結果分析...................51
4.1 液晶核心波導製作.....................................51
4.2 穆勒矩陣量測方法與架構...............................55
4.3 SiO2膜層液晶波導量測結果............................58
4.3.1液晶波導相關量測與分析..............................58
4.3.2 穆勒矩陣的量測結果與極化分析.......................65
4.4 (Si/Si3N4)多層膜堆液晶波導量測結果與分析............76
4.5結論..................................................77
第5章總結與未來工作.....................................78
5.1 本文總結.............................................78
5.2 未來工作.............................................79
參考文獻.................................................83

參考文獻

[1] S. E. Miller, "Integrated optics: an introduction.," Bell Syst. Tech. J.,48 (7), pp. 2059-2068, 1969.
[2] 羅仕守, "新型中空光波導研製與應用," 國立中央大學, 光電科學研究所(2005)
[3] B. E. A. Saleh and M. C. Teich, "Fundamentals of Photonics. " (Weily, 1991).
[4] E. A. J. Marcatili and R. A. Schmeltzer, "Hollow metallic and dielectric waveguide for long distance optical transmission and laser," Bell Syst. Tech. J., 43, pp. 1783-1809, 1964.
[5] J. B. Shellan, P. Agmon, P. Yeh, and A. Yariv, "Statistical analysis of Bragg reflectors," J. Opt. Soc. Am., 68 (1), pp. 18-27, 1978.
[6] S. S. Lo, C. C. Chen, S. C. Hsu, and C. Y. Liu, "Fabricating a hollow optical waveguide for optical communication applications," J. Microelectromech. Syst., 15 (3), pp. 584-587, 2006.
[7] H. K. Chiu, F. L. Hsiao, C. H. Chan, and C. C. Chen, "Compact and low-loss bent hollow waveguides with distributed Bragg reflector," Opt. Express, 16 (19), pp. 15069-15073, 2008.
[8] 張忠興, "轉角中空波導的研製," 國立中央大學, 光電科學研究所(2009)
[9] M. A. Duguay, Y. Kokubun, and T. L. Koch, "Antiresonant reflecting optical waveguides in SiO2-Si multilayer structures," Appl. Phys. Lett., 49 (1), 1986.
[10] D. Yin, H. Schmidt, J. P. Barber, and A. R. Hawkins, "Integrated ARROW waveguides with hollow cores," Opt. Express, 12 (12), pp. 2710-2715, 2004.
[11] S. Campopiano, R. Bernini, L. Zeni, and P. M. Sarro, "Microfluidic sensor based on integrated optical hollow waveguides," Opt. Lett., 29 (16), pp. 1894-1896, 2004.
[12] R. F. Cregan, B. J. Mangan, J. C. Knight, T. A. Birks, P. St. J. Russell, P. J. Roberts, and D. C. Allan, "Single-mode photonic band gap guidance of light in air," Science, 285(5433), pp. 1537-1539, 1999.
[13] P. Russell, "Photonic crystal fibers," Science, 299 (5605), pp. 358-362, 2003.
[14] H. Schmidt and A. R. Hawkins, " Optofluidic waveguides: I. Concepts and implementations, " Microfluid Nanofluid, 4, pp. 3-16, 2008.
[15] A. R. Hawkins and H. Schmidt, " Optofluidic waveguides: II. Fabrication and structures," Microfluid Nanofluid, 4, pp. 17-32, 2008.
[16] Datta A, Eom I, Dhar A, Kuban P, Manor R, Ahmad I, Gangopadhyay S, Dallas T, Holtz M, Temkin H, and Dasgupta P, "Microfabrication and characterization of teflon AF-coated liquid core waveguide channels in silicon," IEEE Sens J, 3, pp. 788-795, 2003.
[17] A. d’Alessandro, B. Bellini, D. Donisi, R. Beccherelli, and R. Asquini, "Nematic liquid crystal optical channel waveguides on silicon," IEEE J. Quantum Electron., 42(10), pp. 1084-1090, 2006.
[18] D. Donisi, B. Bellini, R. Beccherelli, R. Asquini, G. Gilardi, M. Trotta, and A. d’Alessandro, "A Switchable Liquid-Crystal Optical Channel Wavguide on Silicon, " IEEE J. Quantum Electron., 46(5), pp. 762-768, 2010.
[19] Risk WP, Kim HC, Miller RD, Temkin H, and Gangopadhyay S, "Optical waveguides with an aqueous core and a low-index nanoporous cladding, " Opt Exp, 12, pp. 6446-6455, 2004.
[20] Wolfe DB, Conroy RS, Garstecki P, Mayers BT, Fischbach MA, Paul KE, Prentiss M, and Whitesides GM, "Dynamic control of liquid-core/liquid-cladding optical waveguides, " PNAS, 101, pp. 12434-12438, 2004.
[21] D. Yin, D. W. Deamer, H. Schmidt, J. P. Barber, and A. R. Hawkins, " Integrated optical waveguides with liquid cores, " App. Phys. Lett., 85(16), pp. 3477-3479, 2004.
[22] H. Schmidt, D. Yin, J. P. Barber, and A. R. Hawkins, "Hollow-core Waveguides and 2-D waveguide arrays for integrated optics of gas and liquids, " IEEE J. Sel. Topics Quantum Electron., 11(2), pp. 519-527, 2005.
[23] R. Bernini, G. Testa, L. Zeni, and P. M. Sarro, "Integrated optofluidic Mach-Zehnder interferometer based on liquid core waveguides, " App. Phys. Lett., 93, 011106, 2008.
[24] T. T. Larsen, A. Bjarklev, D. S. Hermann, J. Broeng, "Optical Devices based on liquid crystal photonic bandgap fibres, " Opt. Express, 11(20), pp. 2589-2596, 2003.
[25] F. Du, Y. Q. Lu, and S. T. Wu, "Electrically tunable liquid-crystal photonic crystal fiber, " App. Phys. Lett., 85(12), pp. 2181-2183, 2004.
[26] M. W. Haakestad, T. T. Alkeskjold, M.D. Nielsen, L. Scolari, J. Riishede, H. E. Engan, and A. Bjarklev, "Electrically tunable photonic bandgap guidance in a liquid-crystal-filled photonic crystal fiber, " IEEE Photonic. Tech. Lett., 17(4), pp. 819-821, 2005.
[27] T. R. Wolinski, K. Szaniawska, S. Ertman, P. Lesiak, A. W. Domanski, R. Dabrowski, E. Nowinowski-Kruszelnicki, and J. Wojcik, "Influence of temperature and electrical field on propagation properties of photonic liquid-crystal fibres, " Meas. Sci. Technol., 17, pp. 985-991, 2006.
[28] T. R. Wolinski, S. Ertman, A. Czapla, P. Lesiak, K. Nowecka, A. W. Domanski, E. Nowinowski-Kruszelnicki, R. Dabrowski, and J. Wojcik, "Polarization effects in photonic liquid crystal fibers, " Meas. Sci. Technol., 18, pp. 3061-3069, 2007.
[29] K. S. Hsiao, and C. Y. Ko, "Light-controllable photoresponsive liquid-crystal photonic crystal fiber, " Opt. Express, 16(17), pp. 12670-12676, 2008.
[30] 欒丕綱、陳啟昌, "光子晶體-從蝴蝶翅膀到奈米光子學." (五南圖書出版股份有限公司,2006)
[31] 李正中, "薄膜光學與鍍膜技術." (藝軒圖書出版社, 2006)
[32] RSoft Design Group, "BeamPROP 6.0-User Guide. "
[33] 邱華恭, "矽晶片波導元件研究," 國立中央大學,光電科學研究所 (2005)
[34] 松本正一, 角田市良合著, 劉瑞祥譯, "液晶之基礎與應用. " (國立編譯館,1996)
[35] 彼得. J. 柯林斯著, 阮麗真譯, "液晶-自然界中的奇妙物相. " (上海科技教育出版社,2002)
[36] P. J. Collings, and M. Hird, "Introduction to liquid crystals- Chemistry and Physics, " (Taylor & Francis, 1997)
[37] P. Y. Amnon Yariv, "Optical Waves in crystals. " (John Wiley & Son, 1984)
[38] R. M. A. Azzam, and N. M. Bashara, "Ellipsometry and Polarized light. " (North-Holland, 1992)
[39] D. Goldsterin, "Polarized Light." (Marcel Dekker, 2003)
[40] S. Y. Lu, and A. Chipman, "Interpretation of Mueller matrices based on polar decomposition. " J. Opt. Soc. Am. A, 13(5), pp. 1106-1113, 1996.
[41] F. Boulvert, G. Le Brun, B. Le Jeune, J. Cariou, L. Martin, "Decomposition algorithm of an experimental Mueller matrix. " Optics Communication, 282, pp. 692-704, 2009.
[42] J. Li, S. T. Wu, S. Brugioni, R. Meucci, and S. Faetti, "Infrared Refractive indices of liquid crystals. " J. Appl. Phys., 97, 073501, 2005.
[43] S. Brugioni, and R.Meucci, "Refractive indices of the nematic mixture E7 at 1550nm. " Infrared Physics & Technology, 49, pp. 210-212, 2007.
[44] E. D. Palik, "Handbook of Optical Constant of Solids. " (Academic Press, 1985)
[45] B. Bellini, A. d’sAlessandro, and R. Beccherelli, "A method for butt coupling optical fibers to liquid crystal planar waveguides, " Opt. Mater., 29, pp. 1019-1022, 2007.

指導教授

陳啟昌(Chii-Chang Chen)

審核日期

2010-7-19

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