Patent ID: 7525726

Claim:
A photonic crystal semiconductor device comprising: a semiconductor substrate; a lower semiconductor distributed Bragg reflector multilayer film laminated on said semiconductor substrate; a semiconductor core layer laminated on said lower semiconductor distributed Bragg reflector multilayer film; an upper semiconductor distributed Bragg reflector multilayer film laminated on said semiconductor core layer; a dielectric multilayer film laminated on said upper semiconductor distributed Bragg reflector multilayer film; and a plurality of holes passing through said upper semiconductor distributed Bragg reflector multilayer film and said semiconductor core layer to form a photonic crystal structure with a two-dimensional periodic structure of refractive index in the semiconductor core layer, the period of the two-dimensional periodic structure being near a wavelength of light to be propagated in said semiconductor core layer, wherein said lower semiconductor distributed Bragg reflector multilayer film, said upper semiconductor distributed Bragg reflection multilayer film, and said dielectric multilayer film are configured to prevent light in a wavelength of specific band from leaking in a lamination direction.