Resilient FTTH architecture with ladder and grid network structures

Makoto Tsubokawa*, Nazuki Honda, Yuji Azuma

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


This paper proposes a resilient access network architecture with a cable-route protection function based on hybrid wavelength division multiplexing and time division multiplexing passive optical network (WDM/TDM-PON) systems. The reuse of existing optical cable networks allows our ladder and grid networks to introduce duplicate routes for the shared portions of PONs Please check for the shared portions of passive optical networks here. by using a few optical fibers with simple structures. It automatically builds alternative optical paths in response to the wavelengths of optical line terminal and optical network units (ONUs) at both ends of the network. Our simulation achieved network capacities of 1.25Gb/s × 500 ONUs and 10 Gb/s × 64 ONUs by applying 48 and 16 WDMs, respectively, to the networks. We think that these results show sufficient scalability; in particular, the ladder network composed of simple WDM components is a promising architecture for resilient access networks.

Original languageEnglish
Article number6059259
Pages (from-to)839-849
Number of pages11
JournalJournal of Optical Communications and Networking
Issue number11
Publication statusPublished - 2011 Nov


  • Access networks
  • FTTH
  • PON protection
  • WDM networks

ASJC Scopus subject areas

  • Computer Networks and Communications


Dive into the research topics of 'Resilient FTTH architecture with ladder and grid network structures'. Together they form a unique fingerprint.

Cite this