Photonic switching matrix

Details Photonic switching matrix Photonic switching matrix

1992-01-28

1994-05-03

Pascal, Leslie

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359117, H04B 1020

Patent

active

053092660

ABSTRACT:
A photonic switching matrix comprises a plurality of wavelength converters at respective inputs of the matrix to assign a wavelength to each cell applied to an input of the matrix. An optical buffer common to all the outputs of the matrix stores each cell for a duration selectable between 0 and k.T.sub.c where k is an integer and T.sub.c is the duration of cell. A space routing stage comprises a filter for each output of the matrix passing to a given output only cells having a given wavelength. The converters and the buffer are controlled according to routing information indicating for each cell the output of the matrix to which said cell is addressed and for selecting the duration for which each cell is stored in the buffer so as to construct a queue for each output to avoid conflicts between two cells to be switched to the same output presented at the same time as the input of the switching matrix. The switching matrix has applications in telecommunication networks.

REFERENCES:
patent: 5005166 (1991-04-01), Suzuki

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