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All-optical network with passive wavelength routers

  • US 6,735,393 B1
  • Filed: 09/22/2000
  • Issued: 05/11/2004
  • Est. Priority Date: 09/24/1999
  • Status: Expired due to Fees
First Claim
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1. An optical network comprising:

  • a plurality of transmitters configured to transmit optical signals;

    a plurality of receivers configured to receive said optical signals;

    a plurality of nodes connected by optical fibers and comprising passive wavelength routers comprising passive optical components, said passive wavelength routers being configured to;

    impose network-wide routing restrictions restricting routing of said optical signals at said nodes to a selection of possible flow-directions within said optical network, said flow-directions being defined by dividing logically a physical fiber infrastructure of said network in at least two layers, wherein at least one selected flow-direction in one layer is distinct from all selected flow-directions in another layer, and impose wavelength dependent rules for said optical signals; and

    a control system configured to control said optical transmitters thereby controlling end-to-end paths of said optical signals through said optical network.

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