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All, The following is a summary of the 400GBASE-ZR transmitter clock phase jitter strawpoll. Please note that additional results came in after 5pm ET last night, which I am including in the summary. Strawpoll text – During the 17 Sept Joint TF Interim Mtg, Bo Zhang gave a presentation, entitled "Towards a baseline specification for 400GBASE-ZR transmitter clock phase jitter," which had three proposed options for developing a baseline targeting 400GBASE-ZR Tx clock phase jitter spec. We were going to do a straw poll on the group's thoughts about the different approaches on the 21 Sept Joint TF Interim, but the straw poll was inadvertently left off the agenda. This straw poll is to assess the .3cw TF's feelings towards the various approaches. [Please note that the presentation may be found at the 17 Sept Joint Interim Webpage ) Summary of Choices - Option A – Adopt traditional IEEE 802.3 Tx jitter specifications (J4u, JRMS, even-odd jitter) ..... Option B – Leverage IEEE 802.3-2018 Clause 124 400GBASE-DR4 Tx quality metric for coherent Tx output..... Option C – Adopt existing OIF 400ZR IA Tx clock phase noise mask and jitter specs...... Option D – Do not support any of the Options in 1 - 3 Option E – Need More Information Results Option A – 3 Option B – 3 Option C – 7 Option D – 1 Option E - 9 Those individuals responding that they need additional information are invited to share their thoughts with the reflector regarding what information they want to see before making a decision. Regards, John D’Ambrosia Chair, IEEE P802.3cw Task Force To unsubscribe from the STDS-802-3-DWDM list, click the following link: https://listserv.ieee.org/cgi-bin/wa?SUBED1=STDS-802-3-DWDM&A=1 |