Molex Corporation

Emcore Corporation

Masum Choudhury

Moshe Oron

Peerouz Amleshi

Ram Oron

Ariela Donval

Dean A Richardson

Lawrence Kao

Gourgen Oganessyan

Thomas R Stanczyk

Anthony L Moretti

A tapered waveguide optical mode transformer () includes a tapered core formed on a planar substrate structure (). To vertically taper the core (), steps () are etched into the top surface of the core. The steps have depths and lengths along the optical axis of tapered waveguide that are selected to transform the optical mode characteristics of a desired optical fiber to the optical mode characteristics of a desired planar waveguide. The core can also be tapered horizontally to form a 2-D tapered waveguide. The tapered waveguide can be integrally included in planar lightwave circuits (PLCs) to reduce light coupling losses between optical fibers and the PLC waveguides.

System and tapered waveguide for improving light coupling efficiency between optical fibers and integrated planar waveguides and method of manufacturing same

Fiber optic connections are accomplished with passive alignment using a modular approach. An improved waveguide substrate has precisely aligned waveguides secured in place, including at an inlet channel, an outlet channel, or both. The waveguides need not extend beyond the face of the inlet or outlet location, and there is no need to have any unsupported fiber optic fibers connect to the waveguide substrate. When provided, a connector module or modules have fiber optic fibers having supported ends which precisely align with the waveguides of the waveguide substrate. Connecting pins typically are provided to insure alignment between waveguides and fibers is easily attained.

Passive alignment connection for fiber optics

Two techniques are disclosed for writing waveguides between laser diodes and an optical fiber such that the laser diodes are aligned with their respective waveguide facets. The first technique utilizes a light sensitive polymer, such as a ultra-violet (UV) cross-linkable polymer. A precision writing system locates the light emitting centers of the laser diodes and writes the waveguide circuit by exposing the waveguiding regions with the appropriate light. The unexposed areas of the core layer are developed with a solvent and removed. The entire device is then encapsulated with a low-index cladding polymer. The second technique utilizes an active polymer approach in which waveguide regions are formed when the writing beam aligns the dipole molecules in the polymer to cause a change in the refractive index of the polymer.

Methods for fabricating an aligned optoelectronic waveguide circuit

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Naperville, IL, United States of America

Masum Choudhury