Design and Evaluation of 10 Gbps Optical Access System Using Optical Switches

Koji WAKAYAMA  Michitaka OKUNO  Jun SUGAWA  Daisuke MASHIMO  Hiroki IKEDA  Kenichi SAKAMOTO  

IEICE TRANSACTIONS on Communications   Vol.E93-B   No.2   pp.272-279
Publication Date: 2010/02/01
Online ISSN: 1745-1345
DOI: 10.1587/transcom.E93.B.272
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Section on Optical Access Technologies)
optical switch control,  active optical access system,  optical switching unit,  FEC,  10G-EPON,  

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We propose an optical switch control procedure for the Active Optical Access System (AOAS). Optical switches are used in AOAS instead of optical splitters in PON. In the proposed procedure, an OLT determines the switching schedules of optical switches on OSW (Optical Switching Unit) which is installed between OLT and ONU, and informs the OSW of them with a switch control frame preceding of data frame transmission. Then the switch controller on OSW controls the optical switches based on the switching schedules. We developed the prototype systems of OSW, OLT, and ONU. We implemented the optical switch control function with logic circuits on the prototype systems. We demonstrate the proposed procedure works effectively with logic circuits. We also evaluate the 10 Gps optical signal transmission between OLT and ONU. We demonstrate the receiver sensibility on OLT and ONU achieves the distance of 40 km for optical signals transmission with FEC (Forward Error Correction). These receivers are applicable for both AOAS and 10G-EPON.