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Optical transmission device and wavelength-multiplexed optical transmission system

  • US 6,449,070 B1
  • Filed: 01/27/1999
  • Issued: 09/10/2002
  • Est. Priority Date: 02/16/1998
  • Status: Expired due to Term
First Claim
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1. An optical transmission device for a wavelength division multiplexed (WDM) optical transmission system, said optical transmission device comprising:

  • a first part creating a supervisory control signal and transmitting the created supervisory control signal together with an optical main signal, the supervisory control signal including a vector of elements respectively corresponding to wavelengths of the WDM optical transmission system; and

    a second part receiving a supervisory control signal, different from the transmitted supervisory control signal, from a remote optical transmission device, the received supervisory control signal including a vector, the second part converting the vector included in the received supervisory control signal into another vector via a path matrix in which the vector included in the received supervisory control signal forms diagonal elements, said another vector being transmitted by the optical transmission device to a next stage in the WDM optical transmission system.

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