Switched Access Star (SAS) Architecture for Optical Access Networks

Yasuhiro SUZUKI  Tomonoli MAEKAWA  Kenji OKADA  

IEICE TRANSACTIONS on Communications   Vol.E79-B   No.2   pp.122-129
Publication Date: 1996/02/25
Online ISSN: 
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Communication Networks and Services
optical communication,  optical access network,  optical switch,  point-multipoint multiplexing,  

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We propose a novel architecture (Switched Access Star: SAS) using an optical switch for access networks and prove its operating principle experimentally. In this architecture, the multiple optical network units (ONUs) in subscriber premises are connected to one optical subscriber unit (OSU) in a central office through an optical switch. SAS can increase the number of accommodated ONUs, the transmission line length, and the capacity per ONU. Moreover, this architecture does not need encryption or ID/passwords. SAS can reduce system cost and yield flexible transmission capacities and realize easy management and maintenance of optical transmission lines.