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Study of the Transmission Properties of Photonic Crystal with Media Chirality

Author: JinLei
Tutor: LiJunQing
School: Harbin Institute of Technology
Course: Optics
Keywords: Chiral Photonic crystal Media chiral Bandgap structure All-optical switch
CLC: O734
Type: Master's thesis
Year: 2007
Downloads: 118
Quote: 0
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Abstract


As artificial photonic devices with excellent properties of photonic crystals, has a bright future in areas such as optical communication, has attracted widespread attention. Medium chiral structure of chiral materials because of their unique optical properties on the international research one of the hot spots, the chiral photonic devices is in the ascendant. This paper studied the transmission characteristics of the one-dimensional and two-dimensional chiral photonic crystal based on pseudo-spectral time-domain (pseudospectral time-domain PSTD is) and plane wave commenced. In First, photonic crystals and optical chiral Research summarized the background and significance of the discussed topics. The concept optical chiral classified describe briefly the definition and development of medium chiral structure chiral. To some numerical method for calculating the photonic crystal applications in chiral photonic crystals, we studied in detail the constitutive equation of the dual isotropic chiral media. Chiral media, the intrinsic mode is left-handed and right-handed circularly polarized light, it is based on the decomposition of the left and right circularly polarized light are derived chiral discrete equations suitable BI-PSTD method and describes the chiral plane wave expansion method. BI-PSTD algorithm to study the one-dimensional chiral photonic crystal band-gap structure. Through the simulation, for the different layers of the case of the linear chiral photonic crystal, showing the splitting of the band gap with respect to the non-chiral. Different envelope function due to the existence of such photonic crystal sideband sidelobe, try to use them to suppress, and explore while apodization method of high-frequency and low-frequency sideband. We also discussed the introduction of chiral and apodization optical field distribution changes in the photonic crystal. Based on the plane wave expansion method, a detailed discussion of the two-dimensional chiral photonic crystal band-gap structure. Since the substrate and the filler can be chirality can also be a non-chiral, have different chiral photonic crystal composition. Square, triangular and honeycomb lattice under left and right circularly polarized bandgap structure were calculated. And discussed in detail the impact of the parameters of the chiral separation and complete band in the band gap. Finally, we study one-dimensional chiral photonic crystal bistable behavior and apodization based on all-optical switching mechanism based on the sideband. Different circularly polarized two-dimensional photonic crystal bandgap difference designed polarization sensitive chiral photonic crystal line defect waveguide devices.

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CLC: > Mathematical sciences and chemical > Crystallography > Crystal physics > The optical properties of the crystal
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