Wavelength division multiplexed memory module, memory system and method
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United States of America Patent
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Sep 12, 2006
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app pub date -
Jul 15, 2004
filing date -
Sep 9, 2002
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Abstract
A computer system includes a controller linked to a plurality of memory modules each of which has an optical memory hub and several memory devices coupled to the memory hub. The controller communicates with the memory hubs by coupling optical signals to and from the memory hubs using an optical communication path, such as one or more optical waveguides. In one example of the invention, the memory modules transmit and receive optical signals having different wavelengths. In another example of the invention, the memory modules receive optical signals corresponding to memory command and address signals at different wavelengths, but they transmit and receive optical signals corresponding to memory commands at the same wavelength.
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