Curtis,
I think the main gating decision is whether 25G system wavelength overlaps with one of 50G and 100G systems’ wavelengths (4+1 versus 3+1 design as we came to name them, I guess). Once this is known, as far as PCS and MPCP+ is concerned, at least we can start working on the logic part of the system. The actual placement of individual wavelengths (O-bans, S-band, etc.) affects only the PMD design (launch power, dispersion, etc.) but would not affect the logical layer at all. There are trade-offs to both approaches and this is what we should be focusing on primarily as far as PMD is concerned.
Regards
Marek Hajduczenia, PhD, CCNA CSCO12874393
Network Architect, Principal Engineer
Bright House Networks
From: Curtis Knittle [mailto:C.Knittle@xxxxxxxxxxxxx]
Sent: Friday, May 13, 2016 5:11 PM
To: STDS-802-3-NGEPON@xxxxxxxxxxxxxxxxx
Subject: [802.3_NGEPON] IEEE 802.3ca - Number of wavelengths, wavelength locations
Dear Colleagues,
As you prepare to attend the upcoming IEEE 802.3ca Task Force meeting in Whistler, BC, give some thought to the following topics. While there are many topics yet to consider, requiring many contributions, it strikes me that the number of wavelengths allocated for a 100G-EPON system, and their respective locations in the optical spectrum, are particularly important and are gating future decisions. It would be nice if, by the end of the Whistler meeting, we have made or are close to making these two very important decisions. Perhaps you could develop a contribution on one or both of these topics?
Remember, the deadline for requesting agenda time, and for submitting the initial draft of slides, is Monday, May 16.
Thanks!
Curtis
Curtis Knittle
VP Wired Technologies – R&D
CableLabs
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