Finite-Difference Frequency-Domain Eigenmode Analysis of Anisotropic Optical Waveguides
Date Issued
2010
Date
2010
Author(s)
Peng, Chu-Yun
Abstract
In this thesis, the finite-difference frequency-domain (FDFD) method is first utilized to analyze isotropic optical waveguides, such as slab waveguides, channel aveguides, rib waveguides, and optical fibers. The perfectly matched layer (PML) is employed as the absorbing boundary of the computing window in the FDFD solver.
Then, a full-vectorial FDFD method based standard eigenvalue algorithm is developed for the analysis of anisotropic planar optical waveguides. The PML for
anisotropic media is incorporated into the formulation as the absorbing boundary condition so that leaky waveguides can be treated. Adopting this method, anisotropic planar waveguides including anisotropic antiresonant reflecting optical waveguides (ARROWs) and anisotropic slab waveguides are investigated. The effective indices and the field distributions of allowed guided modes on such waveguides
can be accurately calculated. Propagation characteristics of these waveguides are studied and numerical results are shown for different optic-axis orientations.
Finally, a full-vectorial FDFD method based standard eigenvalue algorithm for the analysis of three-dimensional anisotropic optical waveguides is derived. Using the
full-vectorial mode solver, the effective indices and the corresponding chromatic dispersion coeffcient curves for di®erent optic-axis orientations of fundamental guided
modes on a hollow core fiber filled with liquid crystal (LC) are calculated. Also, the propagation behavior of the modes on the LC-core fiber is discussed.
Subjects
Finite-difference frequency-domain (FDFD) method
perfectly matched layer
isotropic optical waveguides
anisotropic optical waveguides
Type
thesis
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