Re: (SSIG) Taking the winning route
Hi Andy
> Date: Fri, 7 Apr 2000 06:39:37 -0700 (PDT)
> From: Andreas Bechtolsheim <avb@xxxxxxxxx>
> To: nuss@xxxxxxxxxx, pkolesar@xxxxxxxxxx
> Subject: Re: (SSIG) Taking the winning route
> Cc: stds-802-3-hssg@xxxxxxxx
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>
>
> 850nm VCSELs for 10 GE require customers to deploy new high-bandwdith MMF.
> I would recommend that PMD solutions are based on installed base MMF or SMF.
I would agree that PMD solution should be based on existing MMF and SMF. At the cost of
pulling new high bandwidth fiber, just pull SMF and operate at 1300 nm.
>
> Specifying a PMD that implies a brand new MMF infrastructure is not
> consistent with the goal of using existing technology wherever possible.
But exploring 10 Gb serial with 850 nm VCSEL over 50/125 um at 100 m satisfies critical market
need at low cost.
Thanks,
Ali Ghiasi
Sun Microsystems
>
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> From nuss@xxxxxxxxxx Fri Apr 7 06:19:48 2000
> Date: Fri, 07 Apr 2000 09:09:05 -0400
> From: Martin Nuss <nuss@xxxxxxxxxx>
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> Subject: Re: (SSIG) Taking the winning route
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> 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...
>
> Martin
>
>
> 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
>
>
>
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