VERFAHREN UND VORRICHTUNG FÜR OPTISCHES MULTIPLEXEN/DEMULTIPLEXEN

• Main Author: AUGUSTSSON, TORSTEN
• Format: Patent
• Language: German
• Published: 05.02.2009
• Subjects: DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; FREQUENCY-CHANGING; MULTIPLEX COMMUNICATION; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICAL LOGIC ELEMENTS; OPTICS; PHYSICS; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; TRANSMISSION

A device for multiplexing a wavelength multiplexed optical signal (25) comprising at least a first and a second optical wavelength channel centered around respective predetermined wavelengths (lambd1, lambd2), comprising an MMI coupler (2), at least of the size 2x2, for inputting the wavelength multiplexed optical signal at an input (3) and for splitting the multiplexed signal into components and imaging these at several ports (13-21), Michelson waveguides (27-31) for receiving and transporting the components imaged at the port of the MMI coupler, reflecting means (33-41) for reflecting the components received and transported in the Michelson waveguides back to the ports of the MMI coupler, wherein the MMI coupler is arranged for inputting the reflecting components, and the respective lengths of the Michelson waveguides are adapted so that said MMI coupler combines the components in a manner such that the first and the second optical wavelength channels are imaged substantially at separated outputs (5-11).