以非對稱金屬與多層介電質組態實現可運用於奈米光路之方向性耦合器極化分離器

以作者查詢圖書館館藏

、以作者查詢臺灣博碩士

、以作者查詢全國書目

、勘誤回報

、線上人數：34

、訪客IP：3.135.190.113

姓名

李偉倫(Wei-Lun Lee) 查詢紙本館藏

畢業系所

光電科學與工程學系

論文名稱

以非對稱金屬與多層介電質組態實現可運用於奈米光路之方向性耦合器極化分離器
(Directional-Coupler-Based Polarization Splitting in Asymmetric Metal/Multi-Insulator Configuration for Optical Nanocircuitry)

相關論文

★ 以金屬與多層介電質組態實現可運用於矽基奈米光路之波導90度轉折結構	★ 發展半解析法以設計高次模態合成之三維波導電漿子布拉格光柵
★ 以金屬與多層介電質組態為基礎之新型波導布拉格光柵	★ 以保角映射結合傳輸線網路法設計與分析表面電漿轉折波導: 理論計算與數值模擬之比較
★ 以模擬退火演算法及考慮太陽光譜權重對具金屬背電極之太陽能電池設計寬頻與全向位抗反射層	★ 有損中間層引介之光學效應於實現最大光穿透率至薄膜太陽能電池吸收層之研究
★ 探討包含金屬之非對稱、單一位能障壁系統中輻射模態致發之共振光學穿隧	★ 橫電極化光波入射非對稱「金屬－介電質」多層結構之共振耦合研究
★ 光波至混合電漿波導極化模態轉換器	★ 基於模態漸變之嵌入式矽波導至混合電漿波導極化模態轉換器
★ 理論探討以金屬內部光輻射為基礎之太陽能光電轉換	★ 以具全極化二維週期奈米結構之「金屬-介電質-金屬」吸收體實現電漿子增強之光電轉換
★ 具耦合電漿子增強之可見光波段電漿子光偵測器	★ 適用於覆晶封裝、厚度薄型化矽基光電二極體之一維光柵: 設計與分析
★ 多原子層鋁膜中電子與聲子間之散射研究

檔案

[Endnote RIS 格式]

[Bibtex 格式]

[相關文章]

[文章引用]

[完整記錄]

[館藏目錄]

[檢視]

[下載]

本電子論文使用權限為同意立即開放。
已達開放權限電子全文僅授權使用者為學術研究之目的，進行個人非營利性質之檢索、閱讀、列印。
請遵守中華民國著作權法之相關規定，切勿任意重製、散佈、改作、轉貼、播送，以免觸法。

摘要(中)

本研究中利用「金屬－多層介電質」電漿波導能同時維持電磁場之高侷限性與高模態雙折射之特性，設計一以方向性耦合器為基礎，可用於奈米光路之波導極化分離器，進而能於單一耦合長度內將不同極化之基模分離。本論文除詳述設計之步驟與方法外，同時推導可用於有損介質之耦合波模理論，以做為本研究之理論基礎。
因運算資源有限，故本研究僅對二維結構進行探討。最佳化設計之結構於操作波長為1550 nm時，TE模態與TM模態之傳輸效率分別可達-0.1443 dB與-0.3777 dB，極化分離區域結構之總長度僅7.28 ，分離比與消光比亦皆超過20 dB。於最佳化結構下，TE模態之傳輸效率對於波長之變化相當敏感，波長範圍1473 nm至1606 nm間可達-0.4575 dB以上。而TM模態之傳輸效率因表面電漿模態之激發，於波長範圍1000 nm至1800 nm間皆達-0.6545 dB以上。此外，TE模態與TM模態分離比與消光比於波長範圍1502 nm至1581 nm間皆可達15 dB以上。
本研究之理論基礎，為由Maxwell方程式開始，推導可用於有損介質之修正性Lorentz互易性定理，並以此為基礎發展可用於有損介質之耦合波模理論。將此理論用於分析「金屬－多層介電質」電漿波導之TE模態耦合特性，並與有限元素分析法之數值模擬結果比較，兩者所得之耦合長度與傳輸效率大小皆相當接近；以數值模擬之結果為基準，耦合長度相差0.9652%，傳輸效率相差0.1313%，顯示此理論分析具有相當程度之可靠性。
將本論文提出之波導極化分離器與文獻資料比較顯示，以非對稱「金屬－多層介電質」組態實現之方向性耦合極化分離器可有效地縮小元件之尺寸，為縮小積體光路提供一創新之想法。

摘要(英)

This thesis described the design and analysis of a novel directional-coupler-based polarization splitter for optical nanocircuitry in two-dimensional (2-D) asymmetric metal/multi-insulator configuration. The design and optimization of the proposed device are conducted using 2-D finite-element-based numerical simulations while modified coupled-mode theory for lossy parallel waveguides is developed as the mathematical background of this research.
The introduction of silver region in asymmetric air/silicon/silica waveguide is shown to not only enhance the field confinement but also control the dynamic range of the effective index associated with the transverse magnetic (TM) mode. A large modal birefringence of > 0.69 is estimated, enabling a clean polarization separation within 7.28 , inclusive of the input/output tapers. The proposed polarization splitter is optimized at the wavelength of 1550 nm. The transmission efficiencies of -0.1443 dB and -0.3777 dB are obtained for the respective transverse electric (TE) and TM modes while the extinction ratios and splitting ratios are larger than 20 dB at 1550 nm. Due to the excitation of the plasmonic mode, an extremely broadband operation from 1000 nm to 1800 nm is found for the TM transmission, which in turn affects directly the TM splitting ratio as well as the extinction ratio along the cross path. The TE behavior is; however, similar to that of the conventional direction coupler. The extinction ratios and extinction ratios are estimated to be larger than 15 dB for wavelengths ranging from 1502 nm to 1581 nm.
The modified coupled-mode theory is derived based on the modified Lorentz reciprocity theorem suitable for describing the field perturbations in a lossy system. The application of the theory to the TE mode coupling in the present case is in good agreement with the finite-element-based numerical simulations. Specifically, the respective differences between the coupling length and power transfer along the cross path are merely 0.9652% and 0.1313% with respect to the numerical results.

關鍵字(中)

★ 表面電漿極化子
★ 波導極化分離器
★ 耦合波模理論
★ 方向性耦合器

關鍵字(英)

★ coupled mode theory
★ waveguide polarization splitter
★ surface plasmonic plariton
★ directional coupler

論文目次

中文摘要 i
Abstract ii
謝誌 iii
目錄 iv
圖目錄 v
表目錄 vii
第一章緒論 1
1.1 前言 1
1.2 研究動機 2
1.3 文獻回顧 3
第二章「金屬－多層介電質」波導極化分離器設計原理 8
2.1 「金屬－多層介電質」波導之導波特性 8
2.2 「金屬－多層介電質」波導極化分離器設計原理 11
2.3元件特性指標參數之定義 14
第三章有損介質中之耦合波模理論 16
3.1波導耦合波模理論 16
3.2 耦合波模理論中電磁場之歸一化 23
第四章結果與討論 25
4.1極化分離器之最佳化設計 25
4.2 極化分離器之傳輸頻譜特性 36
4.3 金屬對TE模態耦合之影響 38
4.4 理論計算與實驗模擬之比較 40
4.5 研究結果分析與比較 43
第五章結論 45
參考文獻 47

參考文獻

[1] H. Raether, Surface Plasmons on Smooth and Rough Surfaces and on Gratings. New York: Springer, 1988.
[2] T. Barwicz, M. R. Watts, M. A. Popovic, P. T. Rakich, L. Socci, F. X. Kartner, E. P. Ippen and H. I. Smith, "Polarization-transparent microphotonic devices in the strong confinement limit," Nat. Photonics, vol. 1, no. 57 2007.
[3] L. Pavesi and D. J. Lockwood, Silicon Photonics. New York: Springer 2004.
[4] D. Sadot and E. Boimovich, "Tunable optical filters for WDM applications," IEEE Commun. Mag., vol. 36, no. 12, pp. 50-55, Dec 1998.
[5] N. Goto and G. L. Yip, "A TE-TM mode splitter in LiNbO3 by proton exchange and Ti Diffusion," J. Lightw. Technol., vol. 7, no. 10, pp. 1567-1574, Oct. 1989.
[6] M. C. Oh, M. H. Lee and H. J. Lee, "Polymeric waveguide polarization splitter with a buried birefringent polymer," IEEE Photon. Technol. Lett., vol. 11, no. 9, pp. 1144-1146, Sep. 1999.
[7] T. Yamazaki, J. Yamauchi and H. Nakano, "A branch-type TE/TM wave splitter using a light-guiding metal line," J. Lightw. Technol., vol. 25, no. 3, pp. 922-928, Mar. 2007.
[8] H. F. Mahlein, R. Oberbacher and W. Rauscher, "An integrated optical TE-TM mode splitter," Appl. Phys., vol. 7, no. 1, pp. 15-20, May 1975.
[9] J. Yamauchi, K. Sumida and H. Nakano, "Analysis of a polarization splitter with a multilayer filter using a Padé operator-based power-conserving fourth-order accurate beam-propagation method," IEEE Photon. Technol. Lett., vol. 18, no. 17, pp. 1858-1860, Sep. 2006.
[10] B. M. A. Rahman, N. Somasiri, C. Themistos and K. T. V. Grattan, "Design of optical polarization splitters in a single-section deeply etched MMI waveguide," Appl. Phys. B, vol. 73, no. 5-6, pp. 613-618, Oct. 2001.
[11] J. M. Hong, H. H. Ryu, S. R. Park, J. W. Jeong, S. G. Lee, E. H. Lee, S. G. Park, D. Woo, S. Kim and B. H. O, "Design and fabrication of a significantly shortened multimode interference coupler for polarization splitter application," IEEE Photon. Technol. Lett., vol. 15, no. 1, pp. 72-74, Jan. 2003.
[12] A. N. Miliou, R. Srivastava and R. V. Ramaswamy, "A 1.3-μm directional coupler polarization splitter by ion exchange," J. Lightw. Technol., vol. 11, no. 2, pp. 220-225, Feb. 1993.
[13] I. Kiyat, A. Aydinli and N. Dagli, "A compact silicon-on-insulator polarization splitter," IEEE Photon. Technol. Lett., vol. 17, no. 1, pp. 100-102, Jan. 2005.
[14] L. M. Augustin, J. J. G. M. V. D. Tol, R. Hanfoug, W. J. M. D. Laat, M. J. E. V. D. Moosdijk, P. W. L. V. Dijk, Y. S. Oei and M. K. Smit, "A single etch-step fabrication-tolerant polarization splitter," J. Lightw. Technol., vol. 25, no. 3, pp. 740-745, Mar. 2007.
[15] P. Albrecht, M. Hamacher, H. Heidrich, D. Hoffmann, H. P. Nolting and C. M. Weinert, "TE/TM mode splitters on InP/InGaAsP," IEEE Photon. Technol. Lett., vol. 2, no. 2, pp. 114-115, Feb. 1990.
[16] T. Yamazaki, H. Aono and H. nakano, "Coupled waveguide polarization splitter with slightly defferent core widths," J. Lightw. Technol., vol. 26, no. 21, pp. 3528-3533, Nov. 2008.
[17] S. Lin, J. Hu and K. B. Crozier, "Ultracompact, broadband slot waveguide polarization splitter," Appl. Phys. Lett., vol. 98, p. 151101, 2011.
[18] E. Ozbay, "Plasmonics: Merging photonics and electronics at nanoscale dimensions," Science, vol. 311, pp. 189-193, Jan. 2006.
[19] F. Liu, Y. Huang, W. Zhang and J. Peng, "Coupling between long range surface plasmon polariton mode and dielectric waveguide mode," Appl. Phys. Lett., vol. 90, p. 141101, Apr. 2007.
[20] F. Liu, Y. Rao, X. Tang, R. Wan and Y. Huang, "Hybrid three-arm coupler with long range surface plasmon polariton and dielectric waveguide," Appl. Phys. Lett., vol. 90, p. 241120, Jun 2007.
[21] R. Wan, F. Liu, Z. Tang, Y. Huang and J. Peng, "Vertical coupling between short range surface plasmon polariton mode and dielectric waveguide mode," Appl. Phys. Lett., vol. 94, p. 141104, Apr. 2009.
[22] Y. J. Chang and Y. C. Liu, "Polarization-insensitive subwavelength sharp bends in asymmetric metal/multi-insulator configuration," Opt. Express, vol. 19, no. 4, pp. 3063-3067, Feb. 2011.
[23] D. L. Lee, Electromagnetic Principle of Integrated Optic. New York: John Wiley & Sons, 1986.
[24] R. G. Hunsperger, Integrated Optics. New York: Springer, 2009.
[25] S. L. Chuang, Physics of Optoelectronic Devices. New York: John Wiley & Sons, 1995.
[26] H. F. Taylor and A. Yariv, "Guided wave optics," Proc, IEEE, vol. 62, no. 8, pp. 1044-1060, Aug 1974.
[27] A. Hardy and W. Streifer, "Coupled mode theory of parallel waveguide," J. Lightwave Technol., vol. LT-3, no. 5, pp. 1135-1146, Oct. 1985.
[28] P. B. Johnson and R. W. Christy, "Optical constants of noble metals," Phys. Rev. B, vol. 6, no. 12, pp. 4370-4379, Dec. 1972.

指導教授

張殷榮(Yin-Jung Chang)

審核日期

2011-12-4

推文