Patent ID: 8724988
Filing Date: 2014-05-13
Classification: H04L,H04Q

Abstract:
1. A synchronous packet switch comprising: a first number of two or more output modules each comprising a second number of two or more optical receivers each configured to receive optical signals at a different one of the second number of two or more wavelengths; the first number of two or more input modules arranged to receive electrical signals carrying data cells to be routed, each of said input modules comprising: a switch control unit arranged to control routing of said optical signals from said optical transmitters to said output modules, and to generate a routing control signal for configuring the routing apparatus to route, for each of the optical transmitters, said optical signal generated from said optical transmitter to a selected one of said output ports, wherein each said routing apparatus comprises a plurality of 1×M optical switches each having one input port and M output ports, each of said optical receivers in said output modules has a different one of said M output ports allocated to it, and each of the optical switches being allocated to a different one of the second number of two or more wavelengths and being configurable to route a received optical signal to a selected one of said M output ports.