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摘要

A multi-wavelength optical telecommunication method comprising the steps of generating at least one optical transmission signal in a predetermined wavelength band, transmitting said optical transmission signal through an optical fibre to a receiving station, receiving the optical transmission signal through a passband filter and filtering said signal to let said transmission signal alone pass, in which the wavelength band is scanned in order to identify in said band a recognizable portion of the optical spectrum being received, thus determining, based on the operating conditions corresponding to said recognizable spectrum portion, a search range of said transmission signal within which the transmission signal is searched out and recognized based on its spectral profile. IMAGE