| 摘要 |
<p>A bidirectional optical network including an optical bridge (130) for selectively transferring optical channels between two bidirectional WDM optical communication systems in two waveguides (121, 121') counterpropagating WDM optical signals are carried on each bidirectional waveguide. The bridge is interposed between the waveguides and includes on the first waveguide (121) a first (137) and second (138) optical coupler and first (141) and second (142) channels selector configured to select one or more optical channels from the first and the counterpropagating WDM optical signals, respectively. At least one path (135 or 133) is positioned between the first waveguide and the second waveguide which carries at least the selected one or more first optical channels to an optical combiner (136 or 143) interposed along the second bidirectional optical waveguide. The selected optical channels are combined with either counterpropagating WDM signal on the second bidirectional waveguide. Optionally, the optical bridge can be reciprocal such that channels from each of the four WDM optical signals may be transferred between the bidirectional waveguides.</p> |
