Patent ID: 6792210
Filing Date: 2004-09-14
Classification: G02B,H04J,H04Q

Abstract:
A loss-balanced optical routing array comprising:a common input waveguide optically coupled to each of a plurality of switchable nodes, each of the plurality of switchable nodes being configurable to a re-insertion path; a bypass waveguide coupling a last input port of a last switchable node to a first output port of a first switchable node; and an output waveguide optically coupled to each of the plurality of switchable nodes, wherein a node transmission loss between an input port and an output port of each of the plurality of switchable nodes is less than about 2.5 dB and a loss difference between a re-insertion path loss between the common input waveguide and the output waveguide through any node, and a bypass path loss between the common input waveguide and the output waveguide through the bypass waveguide is less than about 3 dB.