Patent ID: 6714741
Filing Date: 2004-03-30
Classification: H04B

Abstract:
A method for monitoring an optical network being equipped with WDM equipment able to transmit a plurality of data channels at different wavelengths, said method comprising the steps of:a) coupling out from the said optical network a portion of its optical power at a certain point in the optical network; b) processing the portion of optical power resulting in a number of electrical signals; c) analysing said number of electrical signals and deriving information on individual data channels; and d) producing data representing the result of step characterised in thatstep c) includes the successive substeps of c1) determining from said number of electrical signals at least one multiple channel statistical function of interest which characterises the said plurality of data channels; and c2) processing the said at least one determined function of interest in a predetermined mathematical model as to derive said information on individual data channels.