Two-dimensional photonic crystal device

Details Two-dimensional photonic crystal device Two-dimensional photonic crystal device

2005-03-29

2005-03-29

Font, Frank G. (Department: 2883)

Optical waveguides

Planar optical waveguide

C385S031000

Reexamination Certificate

active

06873777

ABSTRACT:
Columnar pillars are arranged in a square lattice pattern to form a two-dimensional photonic crystal. The two-dimensional photonic crystal has crystal defects created by the absence of pillars, and a resonator is formed in a line waveguide provided by the crystal defects. The resonator is made up of a main pillar, a pair of sub-pillars disposed at the light incidence side of the waveguide with respect to the main pillar and another pair of sub-pillars at the light emitting side of the waveguide with respect to the main pillar, the main pillar and sub-pillars being disposed in the waveguide. The main pillar and the sub-pillars are formed of the same medium as that of the pillars, and are formed simultaneously with the pillars by patterning a silicon thin film coated all over a silicon substrate through a SiO2film formed over the entire surface thereof. Light of a particular wavelength in wavelength-multiplexed incident light is transmitted through the resonator.

REFERENCES:
patent: 6310991 (2001-10-01), Koops et al.
patent: 20030174993 (2003-09-01), Tomaru
patent: 01272555 (2001-10-01), None
Patrini et al., “Photonic Bands in Petterned Silicon-on-Insulator Waveguides,” Jul. 2002, IEEE Journal of Quantum Electronics,vol. 38, No. 7.*
Chongjun, J., et al.,, “Demultiplexer using directly resonant tunneling between point defects and waveguides in a photonic crystal”, Journal of Applied Physics, vol. 91, No. 7, Apr. 2002, pp. 4771-4773.
Fan, S., et al., “Channel drop filters in photonic crystals,” Optics Express 4, vol. 3, No. 1, Jul. 1998, pp. 4-11.

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