Patent ID: 7995883
Filing Date: 2011-08-09
Classification: G02B

Abstract:
1. An optical waveguide comprising: a core to transmit light, the core including an etched end; a cladding to constrain light inside the core through total internal reflection while surrounding the core, the cladding including an angled end; and a wavelength selective filter accommodated in the core to divide bi-directional signals, wherein (i) incident light being perpendicular to the direction of the optical waveguide is reflected at the angled end in a path parallel to an extension direction of the optical waveguide, and (ii) incident light being parallel to the direction of the optical waveguide is reflected at the angled end in a path perpendicular to the extension direction of the optical waveguide, and wherein a cross section of the etched end is different from a cross section of the angled end.