International Business Machines Corporation

Minnesota Mining and Manufacturing Company

Lexmark International, Inc.

Stephen Louis Spanoudis

Mitchell S Cohen

Jeannine Madelyn Trewhella

Glen Walden Johnson

Daniel Michael Kuchta

Nicholas A Lee

Sylvain E Ouimet

Marco Gauvin

Andre Lacerte

Stephane Tremblay

Mark B Ritter

Gordon D Henson

Michael Frank Cina

Modest M Oprysko

Dennis L Karst

Barbara A De Baun

Parallel optical coupling apparatus for coupling a connector attached to one end of a parallel optical cable to a receiver or transmitter array. A parallel fiber optic assembly includes a receiver or transmitter array subassembly that houses a parallel optical coupler for transferring optical signals from an array of sources (e.g., lasers) in the assembly to the connector, or from the connector to an array of receiving elements in the assembly. A connector shell is provided that properly aligns the connector with respect to the optical coupler array.

Leadframe and leadframe assembly for parallel optical computer link

An optical coupler. The coupler has an optical element for transferring an optical signal from an entrance region, external to the optical unit, to an exit region, also external to the optical unit. The coupling element has a first substantially planar transmitting surface lying in a first plane, a second substantially planar transmitting surface lying in a second plane not coplanar with the first plane, a first substantially planar reflecting surface substantially perpendicular to the first transmitting surface, and a second substantially planar reflecting surface substantially parallel to the first reflecting surface, and a shaped reflecting surface substantially perpendicular to and adjoining the first and second reflecting surfaces.

Optical coupler

Low-cost packaging for parallel optical computer link

A method for making an optical fiber transmission apparatus for limiting the optical modes which were emitted from a source in such a way to impinge on an optical fiber to extract a high bandwidth from the fiber. The apparatus includes a lens or aperture to control the angle and distribution of light launched into the fiber. The apparatus achieves reproducibly high bandwidths in large core step-index optical fibers of short transmission length distances. The lens or aperture introduces light from the source into the fiber at an angle at which substantially no intermode delay occurs as the light propagates down the fiber. An integral fiber optic coupling assembly that includes an optical electronic component receptacle, the lens and/or aperture, and an optical fiber connector interface which provides low cost easy to manufacture assembly is also disclosed. A unitary plastic housing provides the function of a lens and mechanical reference or locating features for the light source and optical fiber.

Method for extending bandwidth of large core fiber optic transmission

Growing community of inventors

Lexington, KY, United States of America

Stephen Louis Spanoudis