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In order to cope with the further traffic expansion due to the introduction of future broadband services such as IP-TV/VoD, hierarchical optical path networks that utilize waveband paths, groups of multiple wavelength paths, have been investigated. It was shown that node switch scale of the hierarchical optical path network node (Hierarchical Optical Cross-Connect: HOXC) can significantly be reduced when the grooming ratio, the ratio of number of groomed waveband paths to that of all incoming/outgoing waveband paths, is restricted [S. Kakehashi et al., 2008]. A recent work [L. H. Chau et al., 2008] elucidates that network with colorless grooming ratio restriction, which defmes grooming ratio regardless of the waveband index, can offer high efficiency of path utilization by utilizing a new effective design algorithm. In this paper, we develop a novel matrix-switch-based HOXC architecture and wavelength MTJX/DMUX that implement the colorless grooming ratio restriction. Numerical evaluations demonstrate that our proposed HOXC can significantly reduce node switch scale compared not only to the single-layer optical path network node (single-layer OXC) but also the conventional HOXC node that offers the same restriction. 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