Patent ID: 6652162
Filing Date: 2003-11-25
Classification: G02B

Abstract:
A method for reducing optical reflection at an optical waveguide to bulk media interface that reduces optical reflections and thereby increases return loses when an optical waveguide is interfaced to a bulk media of significantly differing refractive index comprising:placing an optical interface between said optical waveguide and said bulk media, said optical interface comprising a stand-off, said stand-off having a larger cross-sectional area than said waveguide, said stand-off abutting against said optical waveguide, said stand-off abutting against said bulk media, said stand-off having an index closely matched to said optical waveguide, said stand-off having a minimum length sufficient to be capable of generating diffraction and attenuation losses within said stand-off to reduce the optical reflections coupled back to said waveguide from the interface between said stand-off and said bulk media; and thermally fusing said optical waveguide to said stand-off.