Optical Cross-Connect Switch Architectures for Hierarchical Optical Path Networks

Shoji KAKEHASHI  Hiroshi HASEGAWA  Ken-ichi SATO  

IEICE TRANSACTIONS on Communications   Vol.E91-B   No.10   pp.3174-3184
Publication Date: 2008/10/01
Online ISSN: 1745-1345
DOI: 10.1093/ietcom/e91-b.10.3174
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Switching for Communications
waveband,  waveband cross-connect,  optical cross-connect,  

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This paper proposes new switch architectures for hierarchical optical path cross-connect (HOXC) systems. The architectures allow incremental expansion of system scale in terms of the number of input/output fiber ports, wavebands, and optical paths per waveband. These features assure the cost-effective introduction of HOXCs even at the outset when traffic volume is not so large. Furthermore the effectiveness of the proposed switch architectures is demonstrated in a comparison with single-layer OXCs (conventional OXCs). The results provide useful criteria for the introduction of HOXCs in terms of hardware scale.