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EXPANDABLE MULTICAST OPTICAL SWITCH

  • US 20140161454A1
  • Filed: 12/11/2013
  • Published: 06/12/2014
  • Est. Priority Date: 12/12/2012
  • Status: Active Grant
First Claim
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1. An expandable M×

  • N multicast optical switch comprising;

    M common ports, N add/drop ports, and L*N upgrade ports, wherein M and N are integers ≧

    2, and L is an integer ≧

    1;

    a non-expandable M×

    N multicast optical switch having M ingress ports each coupled to a unique one of the M common ports, and N egress ports; and

    N (L+1)×

    1 optical couplers each having L+1 entrance ports and one exit port, wherein each one of the optical couplers has one of the entrance ports coupled to a unique one of the N egress ports, and the exit port coupled to a unique one of the N add/drop ports;

    wherein each one of the remaining L entrance ports of the N optical couplers is coupled to a unique one of the L*N upgrade ports.

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