The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 29, 2005
Filed:
Mar. 05, 2004
Emmanuel Bourelle, Tokyo, JP;
Emmanuel Bourelle, Tokyo, JP;
Japan Aviation Electronics Industry Limited, Tokyo, JP;
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 SiOfilm formed over the entire surface thereof. Light of a particular wavelength in wavelength-multiplexed incident light is transmitted through the resonator.