Re: (SSIG) Taking the winning route
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.
Specifying a PMD that implies a brand new MMF infrastructure is not
consistent with the goal of using existing technology wherever possible.
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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>
CC: HSSG <stds-802-3-hssg@xxxxxxxx>
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...
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,
> 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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