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WDM-PON and CWDM to Address New Bottlenecks in Second-To-Last Mile Product Image

WDM-PON and CWDM to Address New Bottlenecks in Second-To-Last Mile

  • Published: May 2006
  • 12 pages
  • Ovum

Passive optical networks (PONs) have enjoyed resurgence over the last three years as operators looking to offer triple-play services launched major BPON and EPON (and soon GPON) initiatives in Asia and North America. As PON deployments grow, some operators and vendors are beginning to ponder the next generation of technologies that will allow them to provide more bandwidth in the access network to alleviate the coming onslaught of video and content. Wavelength division multiplexing PON (WDM-PON) and CWDM are two key technologies being discussed and used.

WDM-PON as backhaul

CWDM pickup attributed to increased access backhaul bandwidth

A brief review of PON standards and timelines

WDM-PON in access

Complementary to GPON and EPON, not a replacement
WDM-PON as additional overlay where high-capacity dedicated bandwidth is needed
Component implications

Implications for CWDM
Systems implications

Early WDM-PON deployments watched closely

R&D still needed to define full capability of WDM-PON

The bottom line

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