摘要：

The invention relates to a multichannel optical attenuator for multiplexed signal. This optical attenuator includes at least one input optical fibre () intended to transport a set of light beams () centred on different wavelengths (λ, . . . , λ) and at least one output optical fibre () intended to transport said set of light beams. The beams () are sent to a polarisation splitting assembly (). This splitting assembly () includes first polarisation splitting means () generating two light beams (-) linearly polarised along orthogonal directions and a first lens (). Controllable means () liable to change the polarisation of said beams (-) are inserted between the first lens () and a second lens (). A recombination assembly () comprising the second lens () and second polarisation splitting means () receives the light beams linearly (-) polarised from said controllable means () to send them to the output optical fibres ().

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