Unaxis-balzers Aktiengesellschaft

Contraves Space Ag

Alex Dommann

Juergen Ramm

Nicolino Onda

Heinrich Zimmerman

Christoph Benno Luechinger-Bautista

Thomas Brunschwiler

Reto Holzner

Jakob J&uuml;tz

Andreas M&uuml;ndle

Josef Wagner

A method uses a treatment process for surfaces which subsequently are to be connected by bonding, gluing or molding. The surfaces are exposed to an atmosphere with activated hydrogen. The connection is made a process step for eliminating the conservation treatment. The surfaces can be subjected to a plasma discharge in an atmosphere containing hydrogen. The plasma discharge is operated by a cathode/anode path as a DC discharge, and using a thermionic cathode as the cathode. The workpiece to be stored in air comprises a connection, which by gluing, bonding or molding, is subjectable to substantially higher stress than an identical workpiece which is stored in an identical manner, this being determinable by essentially identical Auger diagrams.

Use of a cleaning process, a cleaning process, a connection process and a workpiece pair

The optical waveguide coupler comprises a structure ( ) of a number of elongated narrow optical waveguide strips ( ), which consist respectively of a front area ( ), a center area ( ) and a coupling area ( ). The center area ( ) has respective transition areas ( ) and ( ) to the corresponding area ( ) or ( ). A gap ( ) in the front areas ( ) provided between two adjoining strips ( ) is larger than the thickness of the narrow strips ( ). The front faces ( ) of the front areas ( ), and the front faces of the coupling areas ( ) are embodied to be as smooth as possible, wherein all strips form a stack in the coupling area ( ). The gaps are pits which result from etching of an Si substrate with the aid of a DRIE etching process.

Optical waveguide coupler and method for producing same

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Buchs, Switzerland

Alex Dommann