Alcatel N.v.

Johann Springer

Peter Kersten

Horst Richter

Wolfgang Heck

Klaus-D Matthies

Klaus-Dieter Matthies

Walter Jorg

The invention concerns a method of forming a number of electric conductors at a very short distance from the end of depressions such as V-grooves on a substrate. In one configuration example, a film of PTFE or of a similar material is laminated over the entire surface of the substrate. Holes are etched in the film. The holes are metallized. Conductive paths are formed, which are electrically connected to the metallized holes. The film in the area of the grooves is removed by etching. In another configuration example, the grooves are temporarily filled with a photoresist and the conductive paths and contact surfaces are formed in accordance with a photolithographic method.

Method of forming conductive paths on a substrate containing depressions

Manufacturing of optoelectronic components in which an optical waveguide is made of an optically nonlinear (NLO) polymer, above and below of which is provided a buffer layer which carries at least one stripe electrode. The at least one stripe electrode is used as a mask to form the NLO polymer waveguide.

Method of manufacturing optoelectronic components

In a method of producing a device having at least one optical waveguide on a substrate, two transparent layers are formed one on top of the other on the substrate. The material of the two layers is selected so that the melting point of the material of the second layer is lower than that of the material of the first layer, but has a higher refractive index than the first layer. After formation of the structure, a heating process is performed in which the material of the second layer melts and, due to surface tension, its surface, when seen in cross section, takes on the shape at least approximating the arc of a circle. With this cross-sectional shape, coupling of light waves into and out of an optical fiber is possible at one edge of the substrate after the end faces of the optical waveguide have been ground or polished.

Method of producing optical waveguides on a substrate

An electrode array for an electrooptical facsimile recorder and a method of controlling this electrode array are disclosed. A plurality of spot electrodes are inserted between two main electrodes deposited on a lead lanthanum zirconate titanate (PLZT) substrate. In this manner, three partial lines of electrically controllable light gates are formed which provide a line-at-a-time output of the information to be reproduced. The individual light gates are controlled by driver ICs with push-pull output stages. To control the individual partial lines, different voltages must be applied to the main and spot electrodes.

Electrode array for an electrooptical facsimile recorder and method of

An electrode array is disclosed for a print head of an electrooptical facsimile recording device for recording spots line by line. The recording spots are exposed on a recording medium through light gates (35). These light gates (35) are arranged in rows and are defined by high field strength edge portions (switching areas) of spot electrodes (22, 22') and main electrodes (23, 24, 25, 26). Each spot electrode (22, 22') is associated with n light gates (35, 19), each spot-electrode row (27, 28) being associated with n main electrodes, so that n(N-n) light gates are formed by N electrodes. The electrode array in designed so that each spot-electrode row (27, 28) is between at least wo elongated main electrodes; each spot electrode 22 has n switching areas (20, 21) which are located adjacent n respective main electrodes.

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Aichwald, Germany

Johann Springer