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David W. Martin
From: Martin, David
During the discussion on Reach Objectives there didn’t appear to be any mention of corresponding BER.
Recall the comments from the floor during the July meeting CFI, regarding how 10GigE has been used more as infrastructure rather than as typical end user NICs. And that the application expectation for 100GigE would be similar.
Based on that view, I’d suggest a BER design target of (at least) 1E-15. That has been the defacto expectation from most carriers since the introduction of OC-192 systems.
The need for strong FEC (e.g., G.709 RS), lighter FEC (e.g., BCH-3), or none at all would then depend on various factors, like the optical technology chosen for each of the target link lengths.