Patent ID: 8067755

Claim:
A production device for forming an optical component having a grating structure, said production device comprising: a first light source generating monochromatic and incoherent light of the ultraviolet region; a primary irradiating means for radiating said monochromatic and incoherent light onto a silica-based optical waveguide diffused with at least one of hydrogen or deuterium so as to change a base line level of a refractive index of the silica-based optical waveguide; a second light source generating coherent light; and a secondary irradiating means for radiating said coherent light onto said silica-based optical waveguide so as to produce interference and further change the refractive index of the silica-based optical waveguide, wherein the primary irradiating means is configured to radiate the monochromatic light radiated onto the silica-based optical waveguide without producing interference.