SYSTEM FOR OPTICAL DEMULTIPLEXING OF WAVELENGTH BANDS

摘要

The invention concerns an optical demultiplexing system for separating adjacent wavelength bands without loss of inter-band channels, and comprising a first filtering stage (210) of relatively small bandwidth and relatively large selectivity for extracting the set of inter-band channels. The first stage is followed by a second filtering stage (240) of relatively large bandwidth and relative low selectivity for extracting the wavelength bands delivered by the first filtering stage. Such a system enables the use of the inter-band channels, in particular for managing the network and the wavelength bands.