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[8023-10GEPON] Meeting Report (April 13th in Japan)

All,

In the last Friday's telephone conference, all the six Japanese vendors
held a meeting and carefully discussed the OLT and ONU parameter details
considering not only optical component feasibilities and FEC increments
but all possible optical filter losses, crosstalk penalties, and optical
source degradeations, since the 29 CHIL requirement is not an easy goal
for 10G system to achieve.
After several amendments, all the vendors concluded to suggest the
following tables as the baseline specs. for the first draft.

- 10G Upstream
                       [DFB@ONU, APD@OLT]
    ONU Launch Power(min)    +5 dBm
    OLT Sensitivity(max)    -25 dBm
    CHIL                     29 dB
    Path Penalty              1 dB
    Extinction Ratio          6 dB

- 10G Downstream
                           [PIN@ONU]   [APD@ONU]
    OLT Launch Power(min)   +11 dBm      +3 dBm
    ONU Sensitivity(max)    -19 dBm     -27 dBm
    CHIL                     29 dB       29 dB
    Path Penalty              1 dB        1 dB
    Extinction Ratio          9 dB        9 dB

We'd had two discussion materials about PMD component choices, suggesting
the benefits of APD@ONU and EML@ONU each, shared among attendees
prior to the conference.

We first went through the material which suggested the benefits of APD,
or rather, no SOA in OLT. To PIN supporters, cost was still a main problem
and they still stuck to PIN option.
After the serious discussion, the preferences of the venders were not
changed and were clearly deviced into 3:3.
So each group of supporters will be posting their proposal and
we will move the discussion to the reflector.

Another material suggesting EML@ONU was also discussed,
but it seemed that the venders thought DFB would still be preferable.
Possibility to merge EML specs. into DFB's will be further studied.


Best Regards,
Motoyuki Takizawa

APD@ONU.pdf

EML@ONU.pdf