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| DC 欄位 | 值 | 語言 |
|---|---|---|
| dc.contributor.advisor | 曾雪峰 | zh_TW |
| dc.contributor.advisor | Snow H. Tseng | en |
| dc.contributor.author | 陳姵潔 | zh_TW |
| dc.contributor.author | Pei-Jie Chen | en |
| dc.date.accessioned | 2025-02-21T16:15:01Z | - |
| dc.date.available | 2025-02-22 | - |
| dc.date.copyright | 2025-02-21 | - |
| dc.date.issued | 2024 | - |
| dc.date.submitted | 2024-12-17 | - |
| dc.identifier.citation | [1] Liu, Q. H. "The PSTD algorithm: A time‐domain method requiring only two cells per wavelength." Microwave and optical technology letters 15(3): 158-165, (1997).
[2] Tseng, S. H., et al. "2-D PSTD Simulation of the time-reversed ultrasound-encoded deep-tissue imaging technique." Biomedical Optics Express 5(3): 882-894, (2014). [3] Huang, Y.-A., et al. "An optical target to eliminate impinging light in a light scattering simulation." Computer Physics Communications 185(10): 2504-2509, (2014). [4] Liu, Q. H. "Large-scale simulations of electromagnetic and acoustic measurements using the pseudospectral time-domain (PSTD) algorithm." IEEE Transactions on Geoscience and Remote Sensing 37(2): 917-926, (1999). [5] Shannon, C. E. "Communication in the presence of noise." Proceedings of the IRE 37(1): 10-21, (1949). [6] Berenger, J.-P. "A perfectly matched layer for the absorption of electromagnetic waves." Journal of computational physics 114(2): 185-200, (1994). [7] Gedney, S. D. "An anisotropic perfectly matched layer-absorbing medium for the truncation of FDTD lattices." IEEE transactions on Antennas and Propagation 44(12): 1630-1639, (1996). [8] Roden, J. A. and S. D. Gedney "Convolution PML (CPML): An efficient FDTD implementation of the CFS–PML for arbitrary media." Microwave and optical technology letters 27(5): 334-339, (2000). [9] Yee, K. "Numerical solution of initial boundary value problems involving Maxwell's equations in isotropic media." IEEE transactions on Antennas and Propagation 14(3): 302-307, (1966). [10] Komatitsch, D. and J. Tromp "A perfectly matched layer absorbing boundary condition for the second-order seismic wave equation." Geophysical Journal International 154(1): 146-153, (2003). [11] Qi, Q. and T. L. Geers "Evaluation of the perfectly matched layer for computational acoustics." Journal of computational physics 139(1): 166-183, (1998). [12] Tsuji, Y. and M. Koshiba "Finite element method using port truncation by perfectly matched layer boundary conditions for optical waveguide discontinuity problems." Journal of lightwave technology 20(3): 463-468, (2002). [13] Franken, e. P., et al. "Generation of optical harmonics." Physical review letters 7(4): 118, (1961). [14] Campagnola, P. J. and L. M. Loew "Second-harmonic imaging microscopy for visualizing biomolecular arrays in cells, tissues and organisms." Nature biotechnology 21(11): 1356-1360, (2003). [15] Terhune, R. W. and D. A. Weinberger "Second-harmonic generation in fibers." JOSA B 4(5): 661-674, (1987). [16] He, G. S. "Optical phase conjugation: principles, techniques, and applications." Progress in Quantum Electronics 26(3): 131-191, (2002). [17] Pepper, D. M. and A. Yariv Optical phase conjugation using three-wave and four-wave mixing via elastic photon scattering in transparent media, Academic, New York, (1983). [18] Sokolov, V., et al. "Phase conjugation of broadband light at three-wave mixing in a nonlinear crystal." Optics communications 189(4-6): 377-387, (2001). [19] Yariv, A. "Phase conjugate optics and real-time holography." IEEE Journal of Quantum Electronics 14(9): 650-660, (1978). [20] Dawes, A. M. "Using Transverse Optical Patterns For Ultra-Low-Light Optical Switching." (2008). [21] Fukuda, H., et al. "Four-wave mixing in silicon wire waveguides." Optics express 13(12): 4629-4637, (2005). [22] Sharping, J. E., et al. "Four-wave mixing in microstructure fiber." Optics letters 26(14): 1048-1050, (2001). [23] Agrawal, G. P. "Four-wave mixing and phase conjugation in semiconductor laser media." Optics letters 12(4): 260-262, (1987). [24] Jayet, B., et al. "Optical phase conjugation in Nd: YVO 4 for acousto-optic detection in scattering media." Optics letters 38(8): 1256-1258, (2013). [25] Vellekoop, I. M., et al. "Digital optical phase conjugation of fluorescence in turbid tissue." Applied physics letters 101(8), (2012). [26] Yaqoob, Z., et al. "Optical phase conjugation for turbidity suppression in biological samples." Nature photonics 2(2): 110-115, (2008). | - |
| dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/96720 | - |
| dc.description.abstract | 在本篇論文中，我們將探討在不同條件下的光回聚情形。我們建立了一個圓形散射介質隨機分佈的空間，並利用時域擬譜法（PSTD）來模擬大尺度的電磁波傳遞，透過此種方法相對於時間有限差分法更有效率。在論文中更詳細推導介紹了時域擬譜法、Nyquist Theorem、單軸完美吸收邊界及光學相位共軛的技術，我們利用這些方法相互搭配，進而模擬電磁波在真空中、散射介質中及HT-29二維虛擬組織中的傳遞情形。從模擬結果來看，我們得知波長與回聚效果呈現反比關係；張角與回聚效果成正比關係；介質數則會與張角設置方向不同呈現不同的關係，最後透過虛擬組織的模擬得到了和散射介質相似的結果，為後續的研究訂下基礎。 | zh_TW |
| dc.description.abstract | We investigate the phenomena of light focusing effect under different conditions. We construct a simulation space with randomly distributed circular scattering medium and employ the pseudospectral time-domain (PSTD) method to simulate large-scale electromagnetic wave propagation, which is more efficient than finite-difference time-domain (FDTD) method. Detailed derivation of the PSTD method, the Nyquist theorem, the uniaxial perfectly matched layer absorbing boundary condition, and the optical phase conjugation (OPC) are provided. We utilize these methods to simulate the propagation of electromagnetic waves in different circumstances, such as vacuum, scattering medium, and two-dimensional virtual tissues (HT-29). Our findings indicate that the focusing effect is inversely proportional to the wavelength of the light and is proportional to the angular span of the phase conjugate mirror (PCM). Furthermore, the relation between the light focusing effect and the number of medium numbers depends on whether the PCM is located in the forward direction or sideway. Finally, the results utilizing HT-29 are similar to those of scattering medium, which very helpful for the future research. | en |
| dc.description.provenance | Submitted by admin ntu (admin@lib.ntu.edu.tw) on 2025-02-21T16:15:01Z No. of bitstreams: 0 | en |
| dc.description.provenance | Made available in DSpace on 2025-02-21T16:15:01Z (GMT). No. of bitstreams: 0 | en |
| dc.description.tableofcontents | 口試委員審定書………………………………………………………….I
誌謝……………………………………………………………………….II 中文摘要………………………………………………………...………. III Abstract..………………………………………………………………… IV 圖次…………………………………………………………………….. VII 表次………………………………………………………………………IX 第一章 模擬方法……………………………………………………….. 1 1.1 模擬方法選擇………………………………………………….. 1 1.2 時域擬譜法 (Pseudospectral Time-Domain Method, PSTD)…. 3 1.3 Nyquist Theorem ……………………………………………….. 11 1.4 完美吸收邊界條件 (Perfectly Matched Layer Absorbing Boundary Condition) ………………………………………….. 15 第二章 光學相位共軛技術 (Optical Phase Conjugation)…………….. 22 2.1 發展背景……………………………………………………….. 22 2.2 光學相位共軛技術……………………………...……………... 23 2.3 四波混頻 (Four-Wave Mixing, FWM)…………….………….. 25 第三章 模擬環境設置及分析工具…………………………………….. 28 3.1 模擬參數設定………………………………………………….. 28 3.2 模擬結構……………………………………………………….. 30 3.3 數據量化方式………………………………………………….. 32 3.3.1 三均值處理法…………………………………………… 32 3.3.2 均方根誤差(Root-Mean Square Error, RMSE)…………. 33 第四章 模擬結果討論與分析………………………………………….. 35 4.1 真空中的回聚效果…………………………………………….. 35 4.2 正向方向的回聚效果………………………………………….. 41 4.3 側面方向的回聚效果………………………………………….. 47 4.4 不同介質數的回聚效果……………………………………….. 52 4.5 虛擬組織HT-29的回聚效果………...………………………... 55 第五章 結論和未來展望……………………………………………….. 61 5.1 結論…………………………………………………………….. 61 5.2 未來展望……………………………………………………….. 62 參考文獻………………………………………………………………… 63 | - |
| dc.language.iso | zh_TW | - |
| dc.title | 以時域擬譜法分析光通過散射介質及改變光學相位共軛技術之張角的回聚效果 | zh_TW |
| dc.title | PSTD Analysis of the Focusing Effect in Scattering Medium for Various Angular Spans of Optical Phase Conjugation | en |
| dc.type | Thesis | - |
| dc.date.schoolyear | 113-1 | - |
| dc.description.degree | 碩士 | - |
| dc.contributor.oralexamcommittee | 林晃巖;蕭惠心 | zh_TW |
| dc.contributor.oralexamcommittee | Hoang Yan Lin;Hui-Hsin Hsiao | en |
| dc.subject.keyword | 時域擬譜法,光學相位共軛技術,光回聚,散射介質,虛擬組織, | zh_TW |
| dc.subject.keyword | Pseudospectral Time-Domain Method,Optical Phase Conjugation,Focusing effect,Scattering medium,Virtual tissue, | en |
| dc.relation.page | 64 | - |
| dc.identifier.doi | 10.6342/NTU202404739 | - |
| dc.rights.note | 未授權 | - |
| dc.date.accepted | 2024-12-18 | - |
| dc.contributor.author-college | 電機資訊學院 | - |
| dc.contributor.author-dept | 光電工程學研究所 | - |
| dc.date.embargo-lift | N/A | - |
| 顯示於系所單位： | 光電工程學研究所 | |
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| ntu-113-1.pdf 目前未授權公開取用 | 4.3 MB | Adobe PDF |
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