H - Electricity – 04 – J
Patent
H - Electricity
04
J
H04J 14/00 (2006.01) H04J 14/02 (2006.01) H04Q 11/00 (2006.01)
Patent
CA 2306649
An optical address decode, and an associated method for routing optical data packets. One embodiment of the decoder includes a plurality of waveguides, and semireflective elements that define, within each waveguide, a resonant cavity, each resonant cavity being of a different length. Addresses are encoded as equal spacings of sequences of optical pulses. An address to be decoded is directed simultaneously to all waveguides. Resonance is set up only in the waveguide whose resonant cavity matches the optical pulse spacing of the address. Another embodiment of the decoder includes a plurality of waveguides of different lengths, with the length difference between adjacent waveguides corresponding to a certain propagation time interval. Each waveguide terminates in an optoelectronic detector. Addresses are encoded as patterns of bits spaced according to this propagation time interval, with optical pulses representing "1" bits. An address to be decoded is directed, bit by bit, simultaneously to all waveguides. When the last bit of the address reaches the end of the shortest waveguide, each of the other bits reaches the end of a correspondingly longer waveguide. The encoded address is reflected in the consequent activation pattern of the detectors.
Bereskin & Parr
Lynx Photonic Networks Inc.
LandOfFree
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