Dekun,
Please read the contribution once more! The proposed sensitivity is derived for the 25G InP APD using conventional NRZ detection. Do you disagree? We included the analysis for EDB as a check to
see that EDB would not be ruled out as an option. As you well know, we have never proposed EDB as a required implementation, only as an option!
The proposed receiver sensitivity is supported by 6 component vendors. In the draft loss budget contribution I sent today, the launch power is based on a value that also comes from input from 6
component vendors. Do you agree that we now have enough information to proceed with decisions? If not, what is missing, and will you bring it to the January meeting?
Ed
From: Liudekun [mailto:liudekun@xxxxxxxxxx]
Sent: Thursday, December 22, 2016 9:48 PM
To: Harstead, Ed (Nokia - US) <ed.harstead@xxxxxxxxx>; STDS-802-3-NGEPON@xxxxxxxxxxxxxxxxx
Subject: RE: 802.3ca (100G-EPON) consensus building agenda for 12/22/16
Dear Ed:
Merry charismas and Happy new year! Have a good holiday for all of you US friends. ( It’s only for you, I need continue to work on your Christmas dayL)
Thanks for your good analysis on the 25G receiver sensitivity , it’s a good reference when we make a decision on this.
Due to I didn’t attend the telephone meeting yesterday (the time was too bad for my time zone), here are some of my comments:
If I didn’t understand wrong, you get the -24.21dBm sensitivity from that of 10G PON as a base line(-28.5dBm), and subtract 1dB for APD improvement , then add 5dB for the gap
between 25G EDB detection( based on 10G APD) and 10G NRZ detection (based on 10G APD). While, we haven’t make a decision that we will based on 25G EDB detection(re-using 10G APD) for 25Gb/s receiver. And 5dB gap between 25G EDB detection and 10G NRZ detection
is also only a one-time experimental data rather than a theory principle . This gap still may be improved such as by some equalization algorithm.
From me, it would be better for us to list the capability of transmitter (the power levels of 25G EML/DML ), capability of the 25G APD(including both InP and GeSi), OPP on different
wavelength band , the “real” power budgets on the link(including the insertion loss of the mux/demux, CEX with 10G PON, BOSA filters…) on the table first, and then make a decision on the sensitivity and the power levels.
Anyway, we can continue to discuss in Huntington next month.
Best regards
Dekun Liu
____________________________________________________
Advanced Access Technologies Dept.
网络研究接入技术部
Huawei Technologies Co., Ltd.
华为技术有限公司
Phone: +86 027-59267217 Email: liudekun@xxxxxxxxxx
湖北武汉市关山一路光谷软件园A7-9
邮编：430074
Huawei Technologies Co., Ltd.
A7-9 Wuhan Optical Valley Software Park,Guan Shan Road,Wuhan,Hubei, P.R.China
From: Harstead, Ed (Nokia - US) [mailto:ed.harstead@xxxxxxxxx]
Sent: Thursday, December 22, 2016 10:45 AM
To: STDS-802-3-NGEPON@xxxxxxxxxxxxxxxxx
Subject: Re: [802.3_NGEPON] 802.3ca (100G-EPON) consensus building agenda for 12/22/16
All,
Please see the two attachments pertaining to these topics. For those not able to attend the call (for reason of time zone or other), please feel free to provide comments by email.
Ed
From: Curtis Knittle [mailto:C.Knittle@xxxxxxxxxxxxx]
Sent: Wednesday, December 21, 2016 7:54 PM
To: STDS-802-3-NGEPON@xxxxxxxxxxxxxxxxx
Subject: [802.3_NGEPON] 802.3ca (100G-EPON) consensus building agenda for 12/22/16
Dear Colleagues,
We have two agenda items for tomorrow, and possibly a third:
1.
Some theoretical results on APD receiver sensitivity vs. SOA+PIN sensitivity as a function of SOA ASE filter width—this pertains to the performance of 100G OLT receivers in TDM and WDM co-existence cases. (Harstead)
2.
Proposal for 25G ONU and OLT receiver sensitivity specifications. (Harstead)
Please join the meeting at 11:30 am MST.
1. Please join my meeting.
https://global.gotomeeting.com/join/838401493
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Dial +1 (571) 317-3122
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Curtis Knittle
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CableLabs
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