META Conference, META'12

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A compact equal power photonic crystal beam splitter with complete band gap based on the cavity resonance interface
Yuan-Fong Chau

Last modified: 2012-01-03

Abstract


A compact equal power beam splitter with complete band gap based on the cavity resonance interface (CRI) effect in photonic crystal waveguides is designed and analyzed. The finite-difference time-domain method is adopted to simulate the relevant structures of defect mode in a two dimensional square lattice circular dielectric rods of anisotropic photonic crystal. The device size reduction and flexibility in polarization dependence compared with the conventional power splitter can be attributed to the same resonant frequency for both transverse-magneticand and transverse-electric polarization, because the photonic crystal structures designed here have a complete bandgap. This idea can be easily extended to more complex photonic crystal structures such as N×M CRI couplers, where N and M are the number of input and output waveguides, respectively.

Keywords


photonic crystals; cavity resonance interface (CRI);equal power beam splitter