Ad-Hoc on Application Requirements
• Provide to the 10G EPON T.F. information on actual
deployments by service providers’ requirements worldwide regarding distance, split ratios, power budgets,
installed optical transceiver characteristics, video overlay
characteristics, co-existence with deployed EPONs, and
their response to the need to deploy blocking filters for coexistence.
• This will be accomplished through surveying service
providers and analysis of those replies.
• Such information will be used by this Ad-Hoc to formulate
positions on Wavelength Plans and Optical Power
Budgets.
All approved
Introduction
• Letter explaining context of use
• Status of Task Force & our objectives
• Option for anonymous use of your answers beyond the
Ad-Hoc group.
All approved
Application - Survey Questions
General:
• What versions of PON have you deployed?
– 1G EPON, GPON, BPON, other ____?
• (?) Interest in deploying 10G EPON
Application - Survey Questions
Distance:
• Distribution of actual deployments – please indicate the
percentage of deployed PONs (distance OLT-to-ONU).
– <10km
– 10-20km
– >20km
____% ONUs
____% ONUs
____% ONUs (Max distance _____km)
• Please explain how distance distribution in future
deployments (e.g. in 2010) may differ from existing PON
deployments.
– <10km
– 10-20km
– >20km
____% ONUs
____% ONUs
____% ONUs (Max distance _____km)
Application - Survey Questions
Split Ratios:
• Distribution of actual deployments – please
indicate the percentage of deployed PONs with
the following split ratios.
– <=1:16
– 1:17 to 1:32
– >1:32
____% ONUs
____% ONUs
____% ONUs (Max split ratio ____)
• Please explain how split ratio distribution in future
deployments (e.g. in 2010) may differ from
existing PON deployments
– <=1:16
– 1:17 to 1:32
– >1:32
____% ONUs
____% ONUs
____% ONUs (Max split ratio ____)
• What is your budgeted loss per 1:2 split?
NOTE: Verify if cascade of splitters affects IL?
Application - Survey Questions
Connectors:
• Do you connectorize your splitters?
• Do you have a connector between the ONU and the fiber
plant?
• How many connector mated pairs are typically between an
OLT and an ONU?
• How many connector mated pairs are at most between an
OLT and an ONU?
• What is your budgeted loss per mated connector pair at
EOL?
Application - Survey Questions
Fiber Splices:
• Do you splice your splitters?
• Do you have a splice between the ONU and the fiber
plant?
• How many splices are typically between an OLT and an
ONU?
• How many splices are at most between an OLT and an
ONU?
• What is your budgeted loss per splice at EOL?
Application - Survey Questions
Loss Budgets:
• Distribution of actual deployments – please indicate the percentage of
deployed PONs with the following loss budgets (including fiber,
connectors, splices, splitters, etc.).
–
–
–
–
–
–
–
–
<=24dB
25dB
26dB
27dB
28dB
25dB
>28-30dB
>30dB
____% ONUs
____% ONUs
____% ONUs
NOT YET RESOLVED
____% ONUs
____% ONUs
____% ONUs
____% ONUs
____% ONUs (Max loss ____)
• Please explain how the loss budget distribution in future deployments
may differ from existing PON deployments.
Application - Survey Questions
Installed Optics:
• If there is a video overlay, is the video receiver integrated
into the transceiver (e.g. triplexer) or not?
Application - Survey Questions
Video overlay Characteristics:
• Do you use a dedicated wavelength for video delivery?
• Do you plan to use a dedicated wavelength for video
delivery in the future?
• What modulation type do you use?
• What modulation type do you plan to use?
• What wavelength range? Power level launched into PON
fiber? What CNR do you require at the ONU for such
video wavelength?
Application - Survey Questions
Co-Existence Preferences:
• Is co-existence on a single PON important between
existing formats and new 10G PON formats? Which
existing PON format would this be?
Please, rate the following combinations by their applicability/importance to your deployment environment:
Deployed in the same PON
and must operate
simultaneously…
10G/1G and 1G/1G
10G/1G and video overlay
10G/10G and 1G/1G
10G/10G and video overlay
10G/10G and 10G/1G
Finally,
somebody
makes sense
What’s the
catch?
See if I care
You are
wasting your
time
You must be
nuts to offer
this
(Strongly
agree –
mandatory
feature)
(Desirable,
but not
mandatory)
(Neutral)
(Disagree –
not a
practical
feature)
(Strongly
disagree – in
my network
these
technologies
will never
coexist)
Application - Survey Questions
Deployment of Blocking Filters:
• Would your opinion regarding co-existence change if each
legacy ONU on a PON being upgraded required the
installation of a blocking filter in order to support coexistence with a new 10G EPON format?
All approved