September 15, 2008

ClariPhy Demonstrates 10G MLSD PHY in XFP Application at ECOC 2008

ClariPhy Communications, Inc., a fabless semiconductor company specializing in high speed communications ICs, today announced that it will demonstrate its all-digital CMOS 10-Gbit/s maximum likelihood sequence detection (MLSD) technology in an XFP application at ECOC 2008, Europe's largest conference on optical communications. The demonstration will be in combination with Sumitomo Electric Industries' (SEI's) uncooled directly modulated laser (DML) technology and will be presented in Sumitomo Electric Europe Ltd's booth #257.

ClariPhy's MLSD PHY is a low-power, all-digital CMOS integrated circuit (IC) which delivers optimal electronic dispersion compensation (EDC) performance in optical links ranging from a few meters in data centers up to 100s of kilometers in long haul telecom networks. Because of its performance advantage over all other receiver technologies, MLSD is used ubiquitously in lower speed communications applications such as hard disk drive read channels, but ClariPhy is the first and only vendor to offer 10-Gbit/s MLSD technology in a single-chip CMOS IC.

The superior performance of ClariPhy's MLSD PHY can dramatically lower total solution cost in optical networks by lowering the cost and power of optical components without sacrificing link performance. The demonstration at ECOC offers a clear example of this benefit: the combination of ClariPhy's MLSD PHY and SEI's uncooled DML technology achieves 100km transmission over single-mode fiber at a bit error rate less than 1e-12 in a low-cost, low-power XFP form factor. To achieve such performance without ClariPhy's MLSD technology would require temperature controlled lasers and external modulation, a combination that would be much more expensive and power-hungry.

"We are very pleased with the performance of ClariPhy's MLSD PHY in combination with SEI's DML technology. Together these technologies provide a very compelling value proposition to the optical networking market," said Terry Fujitani ([email protected]), Department Head of Lightwave Technologies Department, Optical Transmission Components Division, Sumitomo Electric Industries.

"We welcome the opportunity to showcase our MLSD PHY in conjunction with SEI at ECOC 2008," said Dr. Paul Voois, cofounder and CEO of ClariPhy. "The demonstration of error-free 10G transmission over 100km of fiber using uncooled DML technology represents a dramatic breakthrough in optical networking, and shows the clear cost and performance advantage that MLSD-based EDC offers the market."

For more information about ECOC 2008, please visit

About ClariPhy

ClariPhy Communications, Inc. is a fabless semiconductor company developing high-speed ICs targeting 10-Gbit/s networks in enterprise backbone, enterprise data center and telecom environments. ClariPhy's ICs enable IT and network management to significantly improve network performance and lower cost. ClariPhy's investors include Norwest Venture Partners (NVP), Onset Ventures, Allegis Capital and Pacific General Ventures. ClariPhy has executive offices in Irvine, California and a development center in Cordoba, Argentina. For more information, please visit