Patent ID: 8050563
Filing Date: 2011-11-01
Classification: H04J

Abstract:
1. A method for performing add/drop operations in an optical add-drop multiplexer (OADM) assembly serving an optical network and comprising an add unit and a drop unit having a number of ports, the method comprising performing the following steps within the OADM assembly: detecting a first signal dropped from the network at the drop unit at a port assigned to an optical channel having an optical carrier wavelength λ, providing a second signal having the carrier wavelength λ of said optical channel, said second signal being suitable for adding to the network via the add unit, performing authentication of said optical channel by comparing one or more components of said first signal with one or more components of said second signal serving as a reference, and allowing or blocking the drop operation of said optical channel to a client and/or the add operation of said optical channel to the network, based on a result of said authentication.