Re: (SSIG) Taking the winning route
I apologize, I should have included a bit more detail with my last response. I'm
currently way backed-up with reflector traffic for the week and now see that my
response left out some details.
WWDM 1300nm is the only strongly supported PHY proposal which addresses the
intalled base of MMF.
No Serial solutions, including the 850nm serial VCSEL solution, address the
installed base of MMF at reasonable distance. I peg this disatance at 100m as
does the corresponding distance/cable plant objective.
The point of my previous note was that the 850nm serial VCSEL solution over
enhanced MMF meets only one distance/cable plant objective, whereas WWDM 1300nm
meets the same one plus three others, rendering it as a much more flexible and
encompasing solution. In simply counting objective checkmarks, it's 4-to-1 in
favor of WWDM.
We all agreed to HSSG objectives. It's time to select PHY's according to these
objectives. I agree with Vipul's picks.
Martin Nuss wrote:
> Of all the MM-fiber PMD proposals, only the 850nm serial VCSEL solution over the
> new high-performance fibers has so far been shown to work under stressed systems
> conditions, with Bit Error Rate measurements and careful analysis of the systems
> impairments to support that, and working with VCSELs from many vendors. The
> suggestions below are highly puzzling to me...
> Rich Taborek wrote:
> > Vipul, Rob,
> > It should be pointed out that a Serial 850nm solution only partially meets one
> > HSSG distance/cable plant objective: 300m on MMF. However, this MMF must be the
> > new, enhanced MMF. The Serial 850nmsolution addresses no SMF objectives
> > WWDM meets all HSSG MMF objectives as well as SMF objectives to 10km.
> > I agree with Vipul's choice of 3 PMDs as the best possible PMD set to address
> > HSSG HSSG distance/cable plant objectives.
> > Best Regards,
> > Rich
> > --
> > Vipul Bhatt wrote:
> > >
> > > Rob,
> > >
> > > Rob Marsland wrote:
> > > >
> > > > Finally, I hate to be annoying, but this is the SERIAL sig. Since when is
> > > > WWDM a serial solution?
> > > >
> > >
> > > There is nothing annoying about your question. I should answer. I believe it
> > > is in our (the Serial SIG's) best interest to rise above our Serial focus and
> > > recognize that an "all Serial" set of solutions that meets all the distance
> > > objectives is not something our customers are willing to sign up for. By
> > > proposing a set of three solutions - two of which are Serial - I am proposing
> > > a set that has the highest chance of being accepted by our customers and the
> > > majority of 802.3ae members. I understand you disagree, and I respect your
> > > opinion.
> > >
> > > Vipul
> > -------------------------------------------------------
> > Richard Taborek Sr. Phone: 408-845-6102
> > Chief Technology Officer Cell: 408-832-3957
> > nSerial Corporation Fax: 408-845-6114
> > 2500-5 Augustine Dr. mailto:rtaborek@xxxxxxxxxxx
> > Santa Clara, CA 95054 http://www.nSerial.com
Richard Taborek Sr. Phone: 408-845-6102
Chief Technology Officer Cell: 408-832-3957
nSerial Corporation Fax: 408-845-6114
2500-5 Augustine Dr. mailto:rtaborek@xxxxxxxxxxx
Santa Clara, CA 95054 http://www.nSerial.com