Patent ID: 7362935
Filing Date: 2008-04-22
Classification: B82Y,G02B

Abstract:
1. An optical multiplexing device comprising: a multiplexing waveguide, formed inside of a photonic crystal having a photonic band gap, and having one output end outputting light at one end surface and plural input ends at the other end surfaces, wherein input beams are coupled to respective plural input ends of said multiplexing waveguide to output output beams from said one output end of said multiplexing waveguide in a multiplexed state, wherein said multiplexing waveguide includes first and second waveguides formed in respective layered planes different from each other in said photonic crystal, said second waveguide has a bend portion in the shape of an in-plane L letter and one end portion of said first waveguide is formed in the proximity of said bend portion of said second waveguide.