Optical switch matrix having at least an input matrix port defining at
least a row of the matrix, a plurality of output matrix ports defining
columns of the matrix, a plurality of switching elements, each one being
disposed at the intersection of at least one row and one of the columns.
Each switch element in a predetermined position of the matrix, in an
activated condition, connects an input matrix port to an output matrix
port, the ports being correspondents respectively to the predetermined
position of the matrix.