Patent ID: 7110674
Filing Date: 2006-09-19
Classification: H04J,H04Q

Abstract:
1. An optical add/drop device adapted to first and second optical paths, comprising: first and second optical add/drop units connected to said first and second optical paths, respectively; an add switch for selectively adding an optical signal to any one of said first and second optical add/drop units; and a drop switch for selectively dropping an optical signal from any one of said first and second optical add/drop units; each of said first and second optical add/drop units comprising: said add switch being connected to said second input ports of said n optical switches and adding said optical signal to one of said second input ports of said first and second optical add/drop unit; said drop switch being connected to said second output ports of said n optical switches and dropping said optical signal to one of said second output ports of said first and second optical add/drop units.