Comms chips

Metro 100G Gets Some Buzz

MultiPhy has introduced a chip for 100Gbit/s metro connections, targeting the potential market for 100Gbit/s parts that don't follow the Optical Internetworking Forum (OIF) framework.

The claim is that there's a market for 100Gbit/s parts that are cheaper and less power-hungry than the coherent design in that framework. Along the same lines, ADVA Optical Networking announced a direct-detection (that is, non-coherent) 100Gbit/s technology a few weeks ago.

MultiPhy's MP1100Q, announced Monday, is a demultiplexer chip for the receive side of a 100Gbit/s link. It's based on MultiPhy's own digital signal processor (DSP) and an analog-to-digital converter (ADC). MultiPhy claims it can offer lower power and costs partly because its ADC runs at 28 billion samples per second, rather than the 56 billion being used for coherent 100Gbit/s.

Why this matters
It's starting to look like this metro 100Gbit/s idea is for real. Finisar Corp. (Nasdaq: FNSR) and Oclaro Inc. (Nasdaq: OCLR) both tell Light Reading the idea has potential.

"We definitely have customers that are interested in other technologies," says Per Hanson, vice president of product marketing with Oclaro. "The typical example is data centers across the metro, or if you have high-capacity routers you need to connect across the metro."

There's no standard at work here, so it's possible that incompatible metro 100Gbit/s technologies will emerge. Whether that's a problem, as it was for the 40Gbit/s long-haul market, is yet to be seen.

For more
ADVA's 100Gbit/s and our 2010 introduction to MultiPhy:

— Craig Matsumoto, West Coast Editor, Light Reading

Pete Baldwin 12/5/2012 | 4:53:17 PM
re: Metro 100G Gets Some Buzz

I haven't done much digging yet about the size of this metro 100G market. Anybody got a hunch?

One of the things Per at Oclaro suggested was that for carriers, the threshold for acceptance might be lower if the volumes are lower. Which I interpreted as meaning: carriers would be more willing to buy something "weird" if it was being used in only a few exception cases.

The bigger market would probably be the data center case.  But even there, as they scream for 100G and beyond, I wonder how many of these links they'll actually buy.

chips_ahoy 12/5/2012 | 4:53:15 PM
re: Metro 100G Gets Some Buzz

Announcing your DMUX on the same day the competition announces a SERDES for the same market


rhr 12/5/2012 | 4:51:13 PM
re: Metro 100G Gets Some Buzz I did look around recently but I couldn't find any market research firm that has forecast the 100Gbps metro opportunity.-á As for the data centres, they will buy but they need much cheaper 100Gbps options than are available today.
Sign In