| 摘要 |
Reflective WSS-based mesh nodes of degree N (i.e., nodes having N ports, where 3<=N<=6) are connected to provide a multiple wavelength channel signal with reciprocal connectivity between the N node ports. The WSS-based mesh nodes of degrees 3 and 4 are implemented using a reflective 1xK WSS, where K is at least equal to 3N-6. Also described are a partitioned degree-4 mesh node and a two-dimensional degree-4 mesh node. For degree-4 mesh nodes, one or more 1x2 directional couplers are used. The degree-5 and -6 nodes are designed by enforcing a symmetric demand constraint and require five 1x4 WSSs and six 1x5 WSSs, respectively. The WSS based degree-3 to -6 mesh nodes offer reduced size and cost.
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