Patent ID: 7680417

Claim:
An optical communications device comprising: a first plurality of light transmitters of a first wavelength, coupled to a first plurality of waveguides of an optical data link, respectively; a second plurality of light transmitters of a second wavelength different than the first wavelength, coupled to a second plurality of waveguides of the link, respectively, wherein the first and second plurality of light transmitters are to transmit data from one side of the link to another side of the link; a first plurality of light detectors of the first wavelength, coupled to the second plurality of waveguides, respectively; and a second plurality of light detectors of the second wavelength, coupled to the first plurality of waveguides, respectively, the first and second plurality of light detectors are to receive data in said one side of the link that was transmitted from said another side of the link, wherein the first and second plurality of light transmitters are arranged in a column, and the first and second plurality of light detectors are arranged in a different column.