Abstract: The invention relates to a spatial phase filter capable of receiving an incident light beam so as to transmit it to a single mode output fibre comprising a spatially variable phase profile and being adapted to excite the evanescent modes of the output fibre. The profile has: an adjustable pattern with a phase distribution substantially corresponding to a combination of at least one quantile of normal distribution on at least one dimension (301); and a phase shifting zone support (320) limited in relation to the incident beam according to the dimension(s). The invention also relates to a system implementing several filters and a method for filter calculating.

Abstract: This invention relates to an optical equalisation device (312) of at least one incident optical beam (40) separated in wavelength into several channels or spectral bands called demultiplexed optical beam, the device including at least two independently controllable cells (420, 430, 440) each comprising spatial phase modulation means and means of scattering the incident optical beam(s). The device is adapted such that at least one of the demultiplexed beams (312) simultaneously and approximately illuminates at least two of the cells (420, 430, 440). The invention also relates to a corresponding system.