Patent ID: 7778509
Filing Date: 2010-08-17
Classification: B82Y,G02B

Abstract:
1. A photonic crystal device comprising: a photonic crystal having an optical waveguide; said photonic crystal including two or more materials having different indexes of refraction arranged periodically; a joint member having one end arranged in contact with an incident end of said photonic crystal optical waveguide; and a second optical waveguide having one end arranged in contact with the opposite end of said joint member; wherein light entering said second optical waveguide travels, through said second optical waveguide and said joint member, into said photonic crystal optical waveguide, and wherein the structures of the photonic crystal optical waveguide, the joint member, and the second optical waveguide are configured such that the intensity ratio of electric field to magnetic field of said photonic crystal optical waveguide and said second optical waveguide match at the point where they join.