Compact Matrix-Switch-Based Hierarchical Optical Path Cross-Connect with Colorless Waveband Add/Drop Ratio Restriction

Ryosuke HIRAKO  Kiyo ISHII  Hiroshi HASEGAWA  Ken-ichi SATO  Osamu MORIWAKI  

IEICE TRANSACTIONS on Communications   Vol.E94-B   No.4   pp.918-927
Publication Date: 2011/04/01
Online ISSN: 1745-1345
DOI: 10.1587/transcom.E94.B.918
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Section on Photonic Network Technologies in Terabit Network Era)
hierarchical optical cross-connect,  waveband,  add/drop ratio,  MUX/DMUX,  AWG,  

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We propose a compact matrix-switch-based hierarchical optical cross-connect (HOXC) architecture that effectively handles the colorless waveband add/drop ratio restriction so as to realize switch scale reduction. In order to implement the colorless waveband add/drop function, we develop a wavelength MUX/DMUX that can be commonly used by different wavebands. We prove that the switch scale of the proposed HOXC is much smaller than that of conventional single-layer optical cross-connects (OXCs) and a typical HOXC. Furthermore, we introduce a prototype system based on the proposed architecture that utilizes integrated novel wavelength MUXs/DMUXs. Transmission experiments prove its technical feasibility.