RIO, Inc. to Demonstrate New High-Performance Low-Cost TOSA for 80 km 10 Gb/s

Santa Clara, CA, March 3, 2005 – RIO, Inc. (Redfern Integrated Optics) will showcase at next week’s OFC/NFOEC 2005 conference (booth #2756) a small format TOSA based on a new type of directly modulated laser, which uses Planar External-Cavity (PLANEX) Laser technology. The physical interface of the TOSA is compliant with the XFP Miniature Device Multi-Source Agreement (XMD MSA). Applications include: SONET OC192 IR-2/LR-2c, SDH64 S64.2a,b/L64.2c, 10GbE 10GBASE-ER/EW/ZR, Fiber Channel, and others.

The TOSA leverages the advantages of RIO’s PLANEX technology to deliver high performance, comparable with externally modulated lasers, combined with the low cost and simplicity of directly modulated lasers, to provide the industry’s lowest cost per port for 10 Gb/s over 80 km of SMF-28 fiber. Primary benefits include:

* Low-cost, high volume solution for 10 Gb/s optical interfaces
* 80 km transmission without dispersion compensation at 1550 nm
* High output power and low power dissipation
* Excellent wavelength stability to support DWDM requirements with high yield and low cost.

According to Radu Barsan, President and CEO of RIO Inc., “Monolithic or hybrid integrated electroabsorption modulated lasers (EMLs) are expensive, especially for distances up to 80 km, and prohibitively expensive for narrow grid DWDM. In contrast, by leveraging pre-tested, low-cost silicon-based Planar Lightwave Circuit (PLC) components, a simple design, and volume-oriented assembly processes, RIO’s approach offers significant manufacturing cost reduction, while meeting or exceeding the high-performance and reliability requirements of Telecom standards. In addition, postponing the wavelength decision until the packaging step significantly reduces the cost and lead time for delivering DWDM devices.”

Leveraging the advantages of the PLANEX integration approach, RIO manufactures the PLC components in its silica-on-silicon wafer fabrication facility and outsources all other components and manufacturing steps.

A number of leading developers of optical networking transceivers and systems have been tracking the development of RIO’s PLANEX-based technology over the past two years. Manufacturers such as Sumitomo Electric Industries, Ltd. have already evaluated early devices during 2004 and are actively testing samples of the new TOSAs in order to leverage the best available technology for next-generation product offerings.

According to Shigeru Inano, R&D Director at Innovation Core SEI, Inc. (a Sumitomo Electric Company), “The growing demand for 40km and 80km 10 Gb/s optical interfaces and the growth of DWDM are stepping up the pressure on transceiver designs. A high-performance low-cost, volume oriented approach at the TOSA level, such as RIO’s, will be critical to achieving the economics needed to support widespread deployment of 10 Gb/s transmission over 80 km and DWDM.”

Demonstrations of new PLANEX-based TOSAs can be seen at RIO’s booth #2756 during regular exhibit floor hours at OFC from March 8 through March 10.

About RIO Inc.
RIO Inc. is an industry leader in the development of new semiconductor and optical transmission technologies that enable transceivers to deliver telecom-grade performance with datacom economics. RIO is headquartered in Santa Clara, CA, with PLC wafer fabrication facilities in Sydney, Australia.
For more information, please visit www.rio-inc.com.

For More Information, contact
Radu Barsan, President and CEO
408-970-3500 ext.350

Jim Hunt
Phone: 253-857-7242
Email: jimhunt@sitmark.com