Resources Contact Us Home
Network with a fast-switching optical core

Image Number 18 for United States Patent #8050257.

A high capacity network comprises a plurality of edge nodes with asymmetrical connections to a plurality of switch planes, each switch plane comprising fully meshed fast-switching optical switch units. Upstream wavelength channels from each source edge node connect to different switch planes in a manner which ensures that upstream wavelength channels from any two edge nodes connect to a common switch unit in at most a predefined number, preferably one, of switch planes. Thus, switch units in different switch planes connect to upstream channels from orthogonal subsets of source edge nodes. In contrast, downstream wavelength channels from a switch unit in each switch plane connect to one set of sink edge nodes. In an alternate arrangement, the upstream and downstream asymmetry may be reversed.

  Recently Added Patents
Tint block image generation program and tint block image generation device
Tiered cost model for access to a computer network
Access control method, information display device using the same, and information display system
Cooling structure and cooling method for control rod drive mechanism and nuclear reactor
Power converter with a variable reference voltage and inrush current limiting
2,2'-binaphthalene ester chiral dopants for cholesteric liquid crystal displays
Scanning projection apparatus with tangential compensation
  Randomly Featured Patents
Target socket
Device for handling photographic film between a cassette and an exposure reproduction apparatus
Live attenuated aldolase-negative bacterial vaccine
Quilting machine
Manufacture of shaped articles from refractory powder
X-ray solution mixing machine
Tote bag
Defoamers for aqueous media
Landscaping block
Vehicle wheel hub bearing unit with a removable sensor