Patent ID: 6870991
Filing Date: 2005-03-22
Classification: G02B

Abstract:
1. An optical component using a fiber-type optical coupler comprising: first and second optical fibers for coupling light from one optical fiber to another, wherein said first and second optical fibers each have a core on which a slanting Bragg diffraction grating is formed, and a cladding of different refractive indexes, wherein said first and second optical fibers border a plane parallel with an optical axis of each said core, each said core being exposed to an air gap at said plane, wherein light diffracted from the Bragg diffraction grating of the core of said first optical fiber is coupled to the core of the Bragg diffraction grating of said second optical fiber, and wherein a plurality of said second optical fibers for coupling different wavelengths are connected to the first optical fiber so that slanting directions of respective ones of said Bragg diffraction grating become the same as the direction of optical transmission in said plurality of second optical fibers.