Patent ID: 6084992
Filing Date: 2000-07-04
Classification: G02B,H04J,H04Q

Abstract:
An arrangement for wavelength dependent routing of optical signals including a number of wavelengths, which arrangement comprises an optical Add-Drop multiplexing arrangement with input and output waveguides and comprising a routing device, including splitting means with a number of inputs and combining means with a number of outputs, one of said inputs and outputs respectively being used for a multi-wavelength input/output, another input and output respectively being used for an add/drop wavelength respectively, the other inputs, and outputs being used for looping back of the remaining wavelengths, between which splitting and combining means a number of branch waveguides are arranged, both wavelength demultiplexing/multiplexing and switching being provided for by said routing device, the arrangement further being wavelength tunable, the wavelength(s) to be added and/or dropped being selectable.