High capacity optical node

Details High capacity optical node High capacity optical node

H - Electricity

04

B

H04B 10/20 (2006.01) H04J 14/02 (2006.01) H04Q 3/52 (2006.01) H04Q 11/00 (2006.01) H04Q 11/02 (2006.01)

Patent

CA 2433381

An optical core node that includes optical switching planes interfaces, at input, with multi-channel input links and, at output, with multi-channel output links. The number of channels per link can differ significantly among the links, necessitating that the input (output) links have different connection patterns to the switching planes. Such an optical core node requires new methods of assigning an incoming wavelength channel to one of the optical switching planes. The assignment of the channels of input and output links to input and output ports is established in a manner that increases input-output connectivity and, hence, throughput. Additionally, the networks that may be formed with such optical core nodes require new routing methods. A preferred method of selecting a path through the core node favors switching planes connecting to a small number of links. In a time- division- multiplexing (TDM) mode, the method of path selection is complemented by temporal packing of TDM frames.

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