Patent ID: 7242866
Filing Date: 2007-07-10
Classification: H04Q

Abstract:
1. An apparatus comprising: an optical multiplexer having a first plurality of input ports coupled to a plurality of output fibers and a second plurality of input ports coupled to the plurality of output fibers; a first optical switch to selectively couple a first optical signal from a first input to at least one selected input port of the first plurality of input ports of the multiplexer; a first control circuit to configure the first optical switch to select the at least one selected input port of the first plurality of input ports of the multiplexer; a second optical switch to selectively couple a second optical signal from a second input to at least one selected input port of the second plurality of input ports of the multiplexer; and a second control circuit to configure the second optical switch to select the at least one selected input port of the second plurality of input ports of the multiplexer, wherein the first optical switch comprises: wherein the first control circuit comprises: a memory to store configuration data identifying the voltages needed to change the optical path lengths of the plurality of optical paths to select the at least one selected input port of the first plurality of input ports; and a plurality of digital to analog converters to convert the configuration data output by the memory to analog control signals.