Gayle R Link

US Patent:

20030068114, Apr 10, 2003

Filed:

Aug 2, 2002

Appl. No.:

10/211136

Inventors:

Gayle Link - Smyrna GA, US
Ikechukwu Nnamani - Norcross GA, US
Gerald Ramdeen - Roswell GA, US
Sean Jones - Clarkston GA, US
Calvin Martin - Atlanta GA, US
Carlos Restrepos - Atlanta GA, US
Zelda Gills - Atlanta GA, US
Gary Baker - Atlanta GA, US

International Classification:

G02B006/12
G02B006/10

US Classification:

385/014000, 385/131000

Abstract:

An all-optical semiconductor waveguide optical regenerative device uses a nonlinear ridge waveguide structure to mix an input signal with a local oscillator signal to produce wavelength-switched and optically-regenerated signals. The ridge waveguide structure, and the local oscillator sources, filters and amplifiers may be tunable, microprocessor-controlled and monolithically integrated. The present invention relates to semiconductor waveguide-based structures, photonic application-specific integrated circuits, which can be used for optical signal processing and, more particularly wavelength-conversion, wavelength-shifting, wavelength-translation, wavelength-switching, wavelength-routing and optical signal transmission, amplification, pulse-shaping and regeneration in optical networks by integrating multiple functions on monolithic semiconductor substrates of Indium Phosphide and its ternary and quaternary semiconductor material derivatives. The device has been fashioned from InP-InGaAsP material, other non-linear optical bulk or doped materials.

US Patent:

20020015552, Feb 7, 2002

Filed:

May 10, 2001

Appl. No.:

09/853337

Inventors:

Gayle Link - Powder Springs GA, US
Calvin Martin - Atlanta GA, US
Zelda Gills - Atlanta GA, US
Derek Robertson - Smyrna GA, US
Marcus Shute - Conyers GA, US

International Classification:

G02B006/293
G02B006/26

US Classification:

385/024000, 385/016000, 359/127000

Abstract:

An optical wavelength router receives multiplexed bundles of wavelength channels from input optical fibers, processes the channels, and outputs the processed channels onto output optical fibers. The router separates one or more of the channels from the received bundles and couples the separated channels into a switching fabric. The remaining, i.e., pass-through, channels are multiplexed with wavelength-converted “add” signals and input into channel combiners. The outputs of the switching fabric may be “dropped,” or coupled to the channel combiners for multiplexing with the pass-through and the add channels. A second switching fabric may be interposed between the output ports of the channel combiners and the output fibers, and a redundant path through the router may be included for path fault protection.