H - Electricity – 04 – J
Patent
H - Electricity
04
J
363/1.8
H04J 14/02 (2006.01) H04Q 11/00 (2006.01)
Patent
CA 2030229
- 24 - ABSTRACT OF THE DISCLOSURE In a wavelength division switching system having m1 inlet highways and m2 outlet highways, m1 splitters are coupled respectively to the inlet highways to split each multiplex signal into m2 x n output signals for coupling to respective inputs of m2 x n optical switches. Each optical switch is responsive to a switching control signal for coupling one of its inputs to one of m2 x n tunable wavelength filters capable of passing one of n different wavelengths, in response to a wavelength selecting signal, to one of m2 x n fixed wavelength converters which are organized into m2 groups. These wavelength converters provide conversion of the input signals so that the converted wavelength is unique in each of the m2 groups. An array of m2 combiners are respectively associated with the groups of the fixed wavelength converters and with the outlet highways. Each combiner has n inputs coupled respectively to the outputs of the fixed wavelength converters of the associated group to multiplex signals appearing at the n inputs thereof for coupling to the associated outlet highway.
Corporation Nec
Smart & Biggar
LandOfFree
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