Lucent Technologies Inc.

Pietro Arturo Giovanni Bernasconi

Barry Irwin Miller

Dries Van Thourhout

Lawrence Warren Stulz

Liming Zhang

Weiguo Yang

Nicholas J Sauer

A high power multi-frequency laser includes a laser cavity defined by reflective elements, a frequency routing device in the cavity comprising a plurality of frequency selective pathways, a first set of optical amplifiers optically coupled to a first end of the frequency routing device, and a second set of optical amplifiers optically coupling a second end of the frequency routing device and a first one of the reflective elements. The high power multi-frequency laser further includes a power combiner. The power combiner is optically coupled to the first set of optical amplifiers and a second one of the reflective elements and combines the outputs of the first set of optical amplifiers such that a common output for the multi-frequency laser is provided. The common output of the present invention provides a single output from the multi-frequency laser having a high output coupling efficiency.

High power multi-frequency laser

An arrayed waveguide grating (AWG) with improved transmission efficiency includes an input P&#xd7;M star coupler, an output M&#xd7;Q star coupler, and M waveguides of unequal length connecting the input and output star couplers. A novel method used to determine the optimum position of the ports ensures that the maximum frequency deviation between the signal frequency and the center of the corresponding transmission passband is minimal for all possible connections among input and output ports.

Arrayed waveguide gratings with improved transmission efficiency

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Eatontown, NJ, United States of America

Pietro Arturo Giovanni Bernasconi