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Proceedings Paper

Smooth migration technologies towards next-generation access systems
Author(s): Naoto Yoshimoto
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Paper Abstract

The investigation of next-generation optical access network (NG-OAN) systems as well as the corresponding standardization activities has been steadily progressing. In the near future, whenever such a NG-OAN system is deployed to meet the bandwidth demands, the smooth migration from the existing system is indispensable because current PON systems such as 1G-EPON/G-PON have been massively deployed all over the world. NGA systems should be deployed so as not to interrupt existing system operation or degrade in-service user availability. I introduce recent technical topics related to co-existence with 1G/10G-EPON as an example. In particular, a 1G/10G dual-rate dynamic bandwidth allocation (DBA) technique and a 1G/10G dual-rate burst-mode transceiver are key technologies enabling 1G- and 10Gdata to be handled simultaneously. Furthermore, from the CAPEX/OPEX reduction viewpoint, longer lifetime system is preferable. NGA systems will, therefore, be more flexible to meet later bandwidth demands, wide coverage requirement, and energy-efficient operation. WDM technology is an attractive approach to meeting these goals.

Paper Details

Date Published: 23 January 2010
PDF: 8 pages
Proc. SPIE 7620, Broadband Access Communication Technologies IV, 762005 (23 January 2010); doi: 10.1117/12.846597
Show Author Affiliations
Naoto Yoshimoto, NTT Access Network Service Systems Labs. (Japan)


Published in SPIE Proceedings Vol. 7620:
Broadband Access Communication Technologies IV
Benjamin Dingel; Raj Jain; Katsutoshi Tsukamoto, Editor(s)

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