Macom Technology Solutions Holdings, Inc.

Corning Incorporated

Roe Hemenway

Cristian Stagarescu

Richard Robert Grzybowski

Malcolm R Green

Wolfgang Parz

Jichi Ma

Nathan Bickel

Daniel Meerovich

Ming-Jun Li

Mark J Soulliere

Izudin Lelic

Daniel J Tebben

Xuxing Zhao

Techniques for efficient alignment of a semiconductor laser in a Photonic Integrated Circuit (PIC) are disclosed. In some embodiments, a photonic integrated circuit (PIC) may include a semiconductor laser that includes a laser mating surface, and a substrate that includes a substrate mating surface. A shape of the laser mating surface and a shape of the substrate mating surface may be configured to align the semiconductor laser with the substrate in three dimensions.

Techniques for laser alignment in photonic integrated circuits

The present invention is directed to a protection switch for use in a node of a two-fiber optical shared protection ring. The two-fiber optical shared protection ring propagates at least one bi-directional channel. Each bi-directional channel includes a working first wavelength signal and a working second wavelength signal. One fiber in the two-fiber optical channel shared protection ring propagates the working first wavelength signal in a first direction and the other fiber in the two-fiber optical channel shared protection ring propagating the working second wavelength signal in a second direction opposite the first direction. The switch includes an N&times;N optical switch fabric system disposed in the node. The N&times;N optical switch fabric includes 2N input/output (I/O) ports, wherein N is four, or an integer multiple of four. Each optical switch fabric is configured to switch at least one bi-directional channel. At least N three-port optical devices are coupled to N of the I/O ports. Each three-port optical device includes a bi-directional port coupled to an I/O port. The bi-directional port is configured to propagate the at least one bi-directional channel.

Two-fiber optical shared protection ring with a bi-directional 4&times;4 optical switch fabric

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Painted Post, NY, United States of America

Roe Hemenway