Optical waveguides – With optical coupler – Plural
Patent
1998-08-28
2000-07-04
Palmer, Phan T. H.
Optical waveguides
With optical coupler
Plural
385 16, 385 37, 385 46, 359123, 359127, G02B 628
Patent
active
060849924
ABSTRACT:
An arrangement and a method route wavelength dependent optical signals including a number of wavelengths. The arrangement includes an optical Add-Drop multiplexing arrangement with input and output waveguides and a routing device with inputs and outputs. The routing device includes a splitting device with a number of inputs and a combining device with a number of outputs. One of the inputs and outputs, respectively, are used for a multi-wavelength input, whereas another input and another output, respectively, are used for an add/drop wavelength. The other inputs and outputs are used for looping back of the remaining wavelengths. Between the splitting and combining devices a number of branch waveguides are arranged, and both wavelength demultiplexing/multiplexing and switching are provided for by the routing device.
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Weber, Jean-Pierre, "A new type of tunable demultiplexer using a multi-leg Mach-Zehnder interferometer," Ericsson Components, p1-4.
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Weber, deceased Jean-Pierre
Weber, legal representative by Paul
Palmer Phan T. H.
Telefonaktiebolaget LM Ericsson
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