Selection module for an optical signal switch and an optical signal switch
AssigneeAlcatel
InventorThierry Zami
Life of this patent
Estimating the term…
Abstract
A selection module for use in an optical signal switch comprises a spatial selector comprising a plurality of inputs each receiving a wavelength division multiplexed optical signal comprising a plurality of channels each associated with a separate wavelength, an output delivering a single signal selected from the plurality of wavelength division multiplexed signals, and a plurality of spectral selectors each selecting a channel from a plurality of channels of the signal selected by the spatial selector.
Claims11
A selection module for use in an optical signal switch, said module comprising a spatial selector comprising:
- a plurality of inputs each receiving a wavelength division multiplexed optical signal comprising a plurality of channels each associated with a separate wavelength,
- an output delivering a single signal selected from said plurality of wavelength division multiplexed signals, and
- a plurality of spectral selectors each selecting a channel from a plurality of channels of said signal selected by said spatial selector.
An optical signal switch adapted to receive a plurality of wavelength division multiplex input signals and comprising output ports supplying wavelength division multiplexed output signals each comprising a plurality of channels each associated with one wavelength, each of said input signals comprising a plurality of channels each associated with one wavelength, and said switch comprising a broadcast stage comprising optical couplers associated with respective input signals, each optical coupler receiving at its input said associated input signal and broadcasting said signal toward a plurality of output ports, and a selection stage comprising a plurality of outputs, and a plurality of selection modules each having L inputs, said plurality of selection modules comprising means for selecting at one of said outputs one of said channels associated with one of said broadcast input signals, in which switch said selection stage comprises at least one selection module as claimed in any preceding claim.
Dependencies are inferred from the claim text.