Patent ID: 6862380
Filing Date: 2005-03-01
Classification: H04J,H04L,H04Q

Abstract:
1. An optical switch device, comprising: a switch fabric; a plurality of input ports through which incoming data contained in a bearer signal passes to the switch fabric, the plurality of input ports to receive the data from a wave division demultiplexer; a plurality of output ports through which outgoing data passes from the switch fabric to transmit the data to a wave division multiplexer; a first demultiplexing device coupled to at least one of the plurality of input ports to inject an optical connection verification signal into the switch fabric; a signal generator coupled to the first demultiplexing device for injecting the connection verification signal into the switch fabric at a frequency that is different from a frequency of the bearer signal; a first multiplexing device coupled to at least one of the plurality of output ports; and a first signal analyzer coupled to the first multiplexing device for analyzing the connection verification signal injected by the signal generator; and a second demultiplexing device coupled to at least one of the plurality of input ports and a second signal analyzer coupled to the second demultiplexing device for analyzing data extracted from the input ports on a polling basis.