Wave-guide structure with a multi-layer system and methods for producing same

US3970360A · kind A · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Ralf Kersten · Niedernhausen, DE
• Hans Mahlein · Unterhaching, DE
• Rudolf Oberbacher

Key dates

• Filing date: Apr 17, 1975
• Grant date: Jul 20, 1976
• Expiry date: Apr 17, 1995

Classification

• Technology area (CPC G): Physics
• CPC primary: G02B6/122
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

A wave-guide structure for use in optical communications and a method of producing the wave-guide structure characterized by a substrate of a given index of refraction, a wave-guide layer having lateral edges and a different index of refraction disposed on a surface of the substrate and a multi-layer system extending through the wave-guide layer between the lateral edges to separate the wave-guide layer into two wave-guide portions which are integral with the multi-layer system and in planar alignment with each other, the multi-layer system comprises a plurality of layers with different indexes of refraction which layers extend at either a right angle or oblique angle to the surface of the wave-guide layer and at either a right angle or an oblique angle to the lateral edges so that radiation transmitted in one of the wave-guide portions has an angle of incident with the multi-layer system. The multi-layer system may extend partially ito the substrate or completely therethrough. The method of producing the various wave-guide structures includes providing a substrate having at least one flat surface, either cutting a groove in the substrate to subdivide the flat surface or cutting th…