Development of Gigabit Ethernet Optical Switched Access Network System Using Optical Packet Switches

Takumi NOMURA  Hiromi UEDA  Takashi KURIYAMA  Toshinori TSUBOI  Hiroyuki KASAI  

IEICE TRANSACTIONS on Communications   Vol.E91-B   No.8   pp.2485-2493
Publication Date: 2008/08/01
Online ISSN: 1745-1345
DOI: 10.1093/ietcom/e91-b.8.2485
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Section on Next Generation Broadband Access Technologies)
optical access network,  OSAN,  GE-OSAN,  GE-PON,  IEEE 802.3,  

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We have already proposed a Gigabit Ethernet-Optical Switched Access Network (GE-OSAN) architecture that realizes longer transmission distances and achieves higher security than the conventional Passive Optical Network (PON). To confirm the technical feasibility of the architecture, we introduce here a GE-OSAN prototype system for downstream transmission. We present the Optical Switching Module (OSM), which uses (Pb,La)(Zr,Ti)O3 (PLZT) optical packet switches, and show that it realizes switching within 10 ns of the designed position in the Inter-Frame Gap (IFG). We also introduce an Optical Network Unit (ONU) with optical burst receiver that uses off-the-shelf commercial devices to reduce its cost; two types of an optical to electrical signal (O/E) converter are implemented for performance comparison. After testing both of them, we select the one that satisfies our acquisition time requirement of 64 ns.