Is Google Fiber a model for Municipal Networks?

Mon Feb 4 23:13:45 UTC 2013

Scott Helms wrote:

>> The document, seemingly, does not address drop cable cost
>> difference.
>>
>> It does not address L1 unbundling with WDM-PON, which
>> requires fiber patch panel identical to that required
>> for SS, either.

> They're not doing WDM-PON or any flavor of PON at all.  Its entirely an
> Active Ethernet deployment.

My point is that their comparison between SS and PON is insufficient.

>> As for power consumption at CO, all the transmitters do not
>> have to have power consuming LDs but can just have modulators
>> to modulate light from a shared light source, which has already
>> happened with QSFP+:

> Masataka, are your trying to participate in the conversation or sell gear?

My point is that form factor reduction by silicon photonics
excludes LDs.

> The laser used in your DVD player is NOT suitable for a broadband
> deployment.

Do you understand that QSFP+ is for 10G Ethernet?

One or two (or three, maybe) shared light source in CO can
have much better quality, which can be distributed to all
the transmitters using splitters and EDFA, which does not
consume a lot of power.

						Masataka Ohta