An Investigation Of Photonic Band Structure For Metallic Photonic Crystals

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dc.contributor.authorLow, Khee Lam
dc.date.accessioned2018-08-29T02:15:25Z
dc.date.available2018-08-29T02:15:25Z
dc.date.issued2011-05
dc.description.abstractPhotonic crystals are artificial periodic structures. Their unique properties are one of the most extensively studied topics in the past 20 years. Researchers believe that this structure can overcome the challenge that we are facing nowadays in the nano-optics related research field. In this thesis, the nature of photonic crystals has been investigated. One of the most important parameters that exhibits the characteristic or properties of photonic crystals is the photonic band structure. In this thesis, a plane wave equation (PWE) has been used to calculate the photonic band structure of photonic crystals. Vacuum, teflon, silicon dioxide, FR-4, and gallium arsenide are used to mix, match, and study the photonic crystal photonic band structure. Our results clarify the discrepancies of photonic crystals property in the literature. In the literature, the band gap tends to appear at high dielectric contrast of photonic crystals, which was predicted by John D. Joannopoulos and coworkers, but was not found in this investigation. Unfortunately, the PWE numerical method is limited to frequencyindependent dielectric materials. Therefore a new equation for the dielectric materials containing metallic components (frequency-dependent materials) has been derived. This equation is much more general compared to the previous studies by other researchers. The photonic band structures of vacuum, teflon, FR-4, and gallium arsenide containing copper rods are plotted for E and H polarization. Copper rods in teflon are not photonic crystals in both square and triangular lattice arrangements for the E polarization. But all the materials can work as photonic crystals for the H polarization mode in both square and triangular lattice arrangements including teflon. In Brillouin zone arrangements, the direction of Γ-X showed the group velocity anomaly effect found at the third lowest band for all the materials in H polarization. Properties of left-handed metamaterials are found for all the materials in all lattice arrangements in the E polarization. A new analytical model is derived for the effective plasma frequency of E polarization from the simulation data using statistical analysis.en_US
dc.identifier.urihttp://hdl.handle.net/123456789/6454
dc.language.isoenen_US
dc.publisherUniversiti Sains Malaysiaen_US
dc.subjectPhotonic band structure foren_US
dc.subjectmetallic photonic crystalsen_US
dc.titleAn Investigation Of Photonic Band Structure For Metallic Photonic Crystalsen_US
dc.typeThesisen_US
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