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Simon_Stanley 12/4/2012 | 9:50:55 PM
re: 10-Gig Ethernet Transponders This report covers announced products. I have found no announcements of 10G Ethernet products from Molex and have had no response from Molex to a request for information.

If someone from Molex is reading this please would they get in touch so we can include your products.
Simon_Stanley 12/4/2012 | 9:50:55 PM
re: 10-Gig Ethernet Transponders Thank for pointing out this typo.

This should read "Intel was a founder of the 200 pin MSA" and will be corrected.
laserburn 12/4/2012 | 9:49:14 PM
re: 10-Gig Ethernet Transponders There was an article in IEEE Spectrum about this (Feb 2002: A Transmitter by Any Other Name, by Kevin Self).

Transponder/Transceiver/Transmitter could all be applied to XFP, XPAK, X2, XENPAK and anything else.

Pot-ay-to, Pot-ah-to.
spegru 12/4/2012 | 9:48:39 PM
re: 10-Gig Ethernet Transponders Yep this term is definitely abused here - especially in "contains both an optical transmitter and receiver and a multiplexer that changes the line rate" - the correct term for which is 'Multiplexer'. 'Trandponder' comes initially from the world of radio comms esp with satellite - where it *translates* the signal from one frequency to another and *responds* by sending the signal down to earth again - with the same content.
Thus in optical comms, the correct usage is a device that takes a 10G signal and changes the wavelength from one to another - either for wavelngth planning purposes or in order to change a short haul interface into a DWDM one

The devices described here are electical on one side. Therefore, the correct term should be 'Tranceiver' - not Transponder at all!
spegru 12/4/2012 | 9:48:38 PM
re: 10-Gig Ethernet Transponders What the article doesn't discuss in any detail at all it why there would be a large market for 10G 'Transponders' (I reckon 'tranceivers' - but anyway....). Although there may be 'increasing interest' this is from a low base.

10G connections at this point will only be used to connect the very biggest of routers/switches. Until we really see mass deployment of such mega-databoxes the market must surely be very small.
You are never (can you ever say that??) going to want a 10G pipe into your local office. Only the big ISPs and operators have those, and even then only in the core network.

Meanwhile, as SD/Sonet does such a good job of carrying multiple 155m, 622m or 2.5G connections inside a 10G pipe. So the biggest market will be 10G for those boxes. Maybe these neat MSA packages can be used to bring down the cost of those instead.


spegru 12/4/2012 | 9:48:38 PM
re: 10-Gig Ethernet Transponders The LR summary article appears to confuse Table 1 with Figure 2.
The text refers to 7 optical layers which are actually interface types, and then goes on to show a multi layer model but describes them as interfaces.
Just picky really - but you might as well get it right

pavelz 12/4/2012 | 9:47:41 PM
re: 10-Gig Ethernet Transponders I'll bite - so what is it about 10GbE:
I think that the list of potential 'killer apps' which would drive this market (10GbE) is longer than the lists (of growth drivers) for other comm markets, that's all. Of course any and all of these could be vapor, but roughly speaking, a longer list is better than a shorter one.
What's on the list:
- 1GbE workstations are shipping, at some point they will need 10GbE corporate (departmental only?) backbone
- EFM (Ethernet in the First Mile) or FTTH might make it to people's houses, and we'll rent videos that way. (The likelihood might be small, but if that comes to pass, wow.)
- metro. (whatever does that mean!-)
- 3G cellular needs backbone and picks 10GbE

O.K. I am not sure about the odds of some of the above; but still, what in the whole of com has a better list? Anyone?
Simon_Stanley 12/4/2012 | 9:45:07 PM
re: 10-Gig Ethernet Transponders The product table has now been updated to include 10GBASE-LX4 transponders from Blaze and Molex. We have also included new XPAK modules from Intel and Molex.
gfeuereisen 12/4/2012 | 9:43:34 PM
re: 10-Gig Ethernet Transponders Say,
were did you get the rumor that Infineon is out of the opto business. They skipped the show but they are still quiet active in the Xenpak and XPAK market and have a full SFF, SFP module family to offer
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