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Title: Analysis of finite-sized electromagnetic bandgap materials and devices by scattering matrix method
Keywords: Electromagnetic bandgap (EBG), photonic crystals, scattering matrix method, addition theorem, ferrite or chiral cylinder, tunable EBG devices
Issue Date: 5-Jul-2004
Citation: WANG QUANXIN (2004-07-05). Analysis of finite-sized electromagnetic bandgap materials and devices by scattering matrix method. ScholarBank@NUS Repository.
Abstract: Besides conventional applications in frequency selective surfaces or gratings, periodic structures regain extensive studies nowadays due to potential utilizations in either novel patch antenna design or photonic crystal waveguides. The property of electromagnetic bandgap (EBG), shown in photonic crystals, makes it very promising in future high density optical interconnects.In this thesis, scattering matrix method is used to simulate the transmission properties of the finite-sized two dimensional EBG materials. By the implementation of addition theorem, multiple scatterings for different dielectric rods are accurately modeled and the forbidden frequency or wavelength bands are efficiently predicted. The results are validated by comparison with other methods as well as some reference data.The method is extended to study some novel EBG structures which contain ferrite or chiral cylinders as defects, where several tunable photonic crystal devices are proposed including ferrite defect filters, couplers and Y-branches. The study provides a new approach to control the flow of light in photonic crystals.
Appears in Collections:Master's Theses (Open)

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