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http://hdl.handle.net/11375/12640
Title: | COMPLEX MODE CALCULATION BY FINITE ELEMENT METHOD |
Authors: | Li, Tingxia |
Advisor: | Huang, Wei-Ping Li, Xun Kumar, Shiva |
Department: | Electrical and Computer Engineering |
Keywords: | Finite Element Method;Complex Mode;PML;Electromagnetics and photonics;Electromagnetics and photonics |
Publication Date: | Oct-2012 |
Abstract: | <p>Optical waveguide is a very important component in numerous optical structures, devices and photonic circuits. With the rapid development of fabrication technologies, increasing integrated complexity and different materials characteristics, there is higher demand on high-index contrast waveguide with arbitrary cross section and anisotropic material, which indicates the need to develop an efficient, high-performance mode solver to analyze optical waveguides to reduce the fabrication cycle and total cost. Modeling and simulation methods, including Finite Difference Time-Domain (FDTD) method, Finite Element Method (FEM), Beam Propagating Method (BPM), Mode Matching Method (MMM) and Couple Mode Theory (CMT), etc, have been popular for years. Among those methods, FEM is a good and efficient method, especially for its superiority on arbitrary meshes.</p> <p>In this thesis, both scalar and vectorial FEM mode solvers are implemented with an emphasis on dealing with the radiation and evanescent modes by enclosing the whole region with the Perfect Matched Layer (PML) and Perfect Reflecting Boundary (PRB). Thus, the unbounded and continuous radiation modes together with evanescent modes are replaced by what we called "complex modes", but still keeping the completeness and orthogonality properties.</p> |
URI: | http://hdl.handle.net/11375/12640 |
Identifier: | opendissertations/7508 8551 3350342 |
Appears in Collections: | Open Access Dissertations and Theses |
Files in This Item:
File | Size | Format | |
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fulltext.pdf | 1.23 MB | Adobe PDF | View/Open |
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