The Lightwave Blog

Posted by Stephen Hardy

As yesterday's funding announcement pointed out, CoreOptics plans to use part of its $25 million capital influx on new product development. In the short term, that means 40G technology; according to CoreOptics VP of Global Sales, Marketing and Business Development Saeid Aramedeh, a new IC is expected to be announced in the next few weeks, to be followed by the second half of next year by a 40G transponder. A 100G product will follow. The trick for CoreOptics, he says, is timing the 100G introduction in time to meet market requirements without killing the 40G offering's prospects.

The company plans to pair its MLSE-2 electronic dispersion compensation technology -- yes, it's based on maximum likelihood sequence estimation and it's the company's second version of the technology -- with coherent optical receiver/detection formats. (Coherent receiver technology also is being used by Discovery Semiconductor and Nortel, the latter pairing it with dual-polarization quadrature phase-shift keying.)

CoreOptics already offers 40G technology -- it was designed into the platforms Marconi (now part of Ericsson) sold to Deutsche Telekom -- but this part of the company's business represents only about 10% of sales. Aramedeh naturally expects this to grow, albeit slowly.

"Personally, I don't see this happening over the next six months or 12 months. It's probably more of a two-year journey before we see 40G in mass deployment from our perspective," he says.

Which brings us to the dilemma 100G poses. "Certainly if you look at the architecture of 100-gig, it has much promise for being more cost-effective than any 40-gig solution," Aramedeh explains. "So the question becomes if we were to expedite 100-gig delivery, would that make sense and then 40-gig would have a shorter life or never go into mass deployment."

A short tenure for 40G would pose a problem for CoreOptics, Aramedeh implied. "When we look at technologies that are needed to make 100-gig a reality, electronic dispersion compensation is definitely a part of that. And for us, the technology roadmap to support 100 gig goes through 40 -- we have to do 40 and 40 coherent to get the learnings from the experience before we can confidently say what architecture we could implement for 100-gig transmission," he explains.

For now, Aramedeh thinks he'll have enough time with 40G to get 100G right. "From a timing perspective, certainly we don't see that [100G] as an immediate need. And the market is divided on that," he admits. "You talk to some folks and they say, 'You need to go into trials the end of next year.' But for volume ramp, we certainly don't see it before 2011 or 2012."

Labels: 100G, 40G, CoreOptics