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Re: [STDS-802-3-400G] Comparison of SMF experimental data



Gary,

Thank you very much for your summary.

I would like you to modify your summary as follows.

For takai_3bs_01_0515.pdf, please use better data point of -14.7 dBm, or median of 3 data points, i.e, -14.6 dBm, which give 2.9 and 2.8 dB margins, respectively.

Measurements for 8x50G NRZ, and especially takai_3bs_01_0515.pdf use practical devices, so there is no need for very large margins.

Keisuke Kojima
Mitsubishi Electric Research Laboratories (MERL)



On May 19, 2015, at 11:43 AM, Gary Nicholl (gnicholl) <gnicholl@xxxxxxxxx> wrote:

While preparing for the Pittsburg meeting last week, I became very frustrated in trying to compare all of the experimental data presented in support of the differing SMF proposals. 

The results were often presented using different receiver  parameters (average power, outer eye OMA, inner eye OMA, etc) and with different receiver implementations/specifications.

This made it extremely difficult to easily compare the different experimental results.

I decided to take all of the experimental data presented in the  task force, capture  it in a single spreadsheet, and convert everything to inner eye OMA sensitivity (and at a 2e-4 BER) to make it easier to compare.  

As a second step I applied a correction  factor to all of the measurement data (where possible) to enable a comparison based on a common set of receiver specifications that are projected to be available in  realizable products for  25Gbaud and 50Gbaud systems in the time frame of the 802.3bs project. 

I shared this analysis with several people yesterday and they suggested it would be worthwhile sharing it with the task force. 

As a result I captured my analysis in the attached presentation.

Gary 







<nicholl_3bs_01_0515.ppt>