Patent ID: 6212316
Filing Date: 2001-04-03
Classification: G02B

Abstract:
An optical interface device between a waveguide and a bulk media 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:a stand-off,said stand-off having an index closely matched to said optical waveguide,said stand-off being placed between said optical waveguide and said bulk media,said stand-off having a larger cross-sectional area than said optical waveguide,said stand-off abutting against said bulk media;said optical waveguide being aligned toward said stand-off; andsaid 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.