PROCESS FOR DETECTING DETUNING AT WAVELENGTH SPLITTER IN OPTICAL FIBRE TRANSMISSION NETWORK AND OPTICAL FIBRE TRANSMISSION NETWORK

摘要

A process for detecting a detuning which currently exists at a wavelength splitter within an optical fibre transmission network, comprises assessing expected values relating to at least two light sub-carriers, and determining actual values relating to said at least two light sub-carriers. A wavelength shift value which quantifies the existing detuning is obtained from a comparison between the expected and actual values. The process may be completed with updating a tuning of a light source from which the sub-carriers are derived, so as to reduce the wavelength shift.