SYSTEM AND METHOD FOR USE IN WAVELENGTH DIVISION MULTIPLEXER

A system and method are presented for use in dense wavelength division multiplexing. According to this technique, K spatially separated broadband optical beams are produced comprising respective K arrays of spectral components arranged with certain common periodicity, P, where the spectral components present data channels and are arranged in interleaved fashion in the K arrays, with spectral components of one array being shifted with respect to the next array a value substantially equal to said periodicity divided by number of separated broadband beams, or P(K-1)/K. Spectral shaping is applied to the K arrays to convert modulated-shape of the spectral components in the K arrays to K groups of desired spectral shape of data channels. This enables to combine the K groups of the spectral channels into a combined beam comprising all the spectral channels being arranged with substantially no gap between the channels.