Compact matrix-switch-based hierarchical optical path cross-connect with colorless waveband add/drop ratio restriction (English)
IEICE Transactions 94-B, No. 4, 918-927 (2011).
1
Formulation of waveguide connection for waveband MUX/DEMUX using concatenated arrayed-waveguide gratings (English)
IEICE Transactions 90-B, No. 10, 2950-2952 (2007).
2