Integrated optical arrangement for demultiplexing a plurality of different wavelength channels and the method of manufacture

US5206920A · kind A · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Cornelius Cremer · Poing, DE
• Norbert Emeis · Munich, DE
• Hans Mahlein · Unterhaching, DE

Key dates

• Filing date: Jan 23, 1992
• Grant date: Apr 27, 1993
• Expiry date: Jan 23, 2012

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01S5/4087
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

An integrated optical arrangement for multiplexing a plurality of different waveguide channels including a film waveguide disposed on a substrate having an arrangement for coupling a plurality of waveguide channels into the film waveguide, said film waveguide having a diffraction grating for separating the waveguide channels into a plurality of diffracted channels extending to a plurality of strip waveguides for conducting them from the film waveguide, and each of the strip waveguides having a photodetector in the form of an integrated diode for detecting the light being coupled from the film waveguide. The method includes providing a plurality of layers, removing the layers to form the diodes, further removing portions of the remaining layers to form the strip waveguides and film waveguides.