Lucent Technologies Inc.

Avago Technologies General IP (singapore) Pte. Ltd.

Julian Bernard Donald Soole

Leonard Jan-Peter Ketelsen

A wavelength division multiplexer utilizes an optical source in the form of at least two separate laser array components, each laser array component including a group of laser diodes operating at wavelengths that are spaced by a multiple of the pre-defined channel spacing of the multiplexer. This optical source thus generates a plurality of non-sequential optical signals that need to be re-ordered at some point along the signal path so that all of the signals are multiplexed onto a single output signal path. The multiplexer utilizes an arrayed waveguide grating (AWG) to combine the various optical signals, with a specialized apparatus for re-ordering the non-sequential wavelengths of the propagating plurality of N optical signals disposed either at the input or output of the AWG.

Planar lightwave circuit optical multiplexer for non-sequential wavelength channels

The specification describes an optical integrated circuit for a wavelength division demultiplexer. The demultiplexer comprises an AWG filter comprising a waveguide grating array between multimoded coupler regions. Crosstalk in the optical signals from the demultiplexer is reduced by integrating a second AWG filter on each output waveguide. In an alternative embodiment the second filter is a generalized Mach-Zehnder (M-Z) interferometer filter employing multimode interference filter (MMI) coupler regions connected by a waveguide array.

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Edison, NJ, United States of America

Julian Bernard Donald Soole