Nortel Networks Corporation

Pia Sindile

Delfin Y Montuno

Abel Clement Dasylva

Zhonghui Yao

Prasad Kodaypak

A network arrangement for aggregation of groups of tunable sources in a photonic network is disclosed. The network arrangement includes transmit edge elements having a plurality of tunable optical transmitters, an optical switch and a cyclic optical multiplexer, and receive edge elements having optical demultiplexers, optical switches and a plurality of optical receivers. A variety of arrangements are disclosed including protected and unprotected network architectures. The network arrangement disclosed is particularly useful for overcoming the problem of scaling a photonic network.

Architecture for dynamic connectivity in an edge photonic network architecture

A technique for wave-mixing bulk frequency conversion in a network comprising one or more channels is disclosed that enables cost-effective wavelength-conversion. In one particular exemplary embodiment, the technique may be realized by a new class of multi-log wave-mixing-cross-connects that are based on arbitrary b&times;b space-switching elements, where b>2. In such cross-connects, for any light-path, the worst case number of cascaded frequency-conversions is O(log (FW)), F being the number of fibers. One benefit of the new design may be maximized when W&equals;O(F), b&equals;O(F), and the worst-case number of cascaded conversions is O(1).

Technique and apparatus for frequency conversion in an optical network

A technique for wave-mixing frequency translation is disclosed. In one particular exemplary embodiment, the technique may be realized as a general construction for multi-log wave-mixing unicast or multicast cross-connects, with b&times;b space-switching elements, where b&gE;2. The resulting cross-connects support all-optical frequency-conversion, and they exploit multi-stage wave-mixing bulk frequency-translation In these cross-connects, for any light-path the worst case number of cascaded frequency-conversions is O(log W), where W is the number of wavelengths per fiber. The wavelength-converter requirements are of between O(F) and O(F log W), per stage and per plane, where F is the number of fibers.

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Ottawa, Canada

Pia Sindile