Re: [802.3_100GNGOPTX] Minutes Uploaded - Forward Direction

[Daniel Dove <ddove@xxxxxxx>]

Hi Chris,

Talking about relative cost of a 4x25G TOSA to a 10x10G TOSA is OK as long as you are discussing material differences, yield expectations, power consumption impacts upon cost, and the like... not how much you pay for them.

The problem with the earlier discussion is that the module "cost" being referred to was not truly making that kind of comparison.

If you want to discuss modules, compare things like PCB area and make an assertion of the relative cost improvement due to size reduction, this is fine. If you want to discuss thermal management cost comparisons, this is fine too. Port density impacts upon system amortization, fine. This can be done through a presentation where peers can review it, but it has to be done comparing relevant materials, processes, yields, and all cost factors that can be compared at common volumes.

All, This is always a difficult area to tread, so please tread carefully.

Regards,

Dan

On 2/3/12 1:23 PM, Chris Cole wrote:

Dan

You suggested that discussing laser TOSA* costs (for example VCSEL or
DFB laser TOSA) is OK since they are module building blocks, but
discussion module cost is not OK.

Can you clarify the difference. I am having a hard time seeing the
difference. Unless we discuss the cost of sand and such, there is a long
value added chain that goes from raw material to chips, boxes, etc, to
sub-components like carriers, to components, to modules, to systems.

If we cannot discuss costs, we should eliminate the 5 Criteria.

Chris

*TOSA = Transmitter Optical Sub-Assembly

-----Original Message-----
From: Daniel Dove [mailto:ddove@xxxxxxx] 
Sent: Friday, February 03, 2012 1:11 PM
To: STDS-802-3-100GNGOPTX@xxxxxxxxxxxxxxxxx
Subject: Re: [802.3_100GNGOPTX] Minutes Uploaded - Forward Direction

Seriously, folks;

I am going to officially ask that if you wish to talk about products and

their relative prices, please do it on a different discussion forum. 
Maybe an email thread among friends?

We are here to talk about IEEE standards, PMDs, and their relative
costs.

Dan Dove
Chair, Next Generation 100G Ethernet Study Group