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Vitesse, Apogee Photonics partner on transceiver reference design

Posted: 14 Sep 2005 ?? ?Print Version ?Bookmark and Share

Keywords:vitesse transceiver? apogee photonics? vitesse transceiver apogee? vitesse reference design?

Vitesse Semiconductor Corp. and Apogee Photonics recently announced a joint reference design that extends 10Gbps transceiver performance to an industrial temperature range. According to the two companies, this new reference design enables customers to quickly and confidently deploy high-speed optical links in demanding environmental conditionsincluding the outside plant associated with PON backhaul applicationswhile maintaining average XFP transceiver SONET eye-mask margins of 20 percent over case temperatures ranging from -40C to 85C.

"This reference design is leading the industry to industrial temperature modules that extend the application of 10Gbps links," said Richard Interrante, manager of applications engineering for Vitesse's network products division. "This partnership with a TOSA manufacturer allows us to demonstrate the performance of our product in a real-world environment."

Driver IC plus EML TOSA
The joint reference design combines Vitesse's XFP PRO PCB layout with its VSC7982 driver IC and Apogee Photonics' 10T3081 EML TOSA. The VSC7982 supports case temperatures of up to 100C, while the 10T3081 supports up to 95C TOSA case. The press release states that industrial XFP solutions using the above combination with the Vitesse VSC8239 dual-signal conditioner and VSC7978 transimpedance amplifier IC achieve less than 2.5W total power consumption, which is lower than comparable DML solutions.

"The VSC7982 is a low-power design operating from a single 3.3V supply with integrated automatic power control (APC) loop to maintain the average power output of the laser over temperature and time," Interrante said. "The APC loop has integrated point fault features that allow the end module manufacturer to support eye safety without additional external components."

Apogee Photonics' 10T3081 EML is built using the company's patented Asymmetric TwinGuide (ATG) technology, which is a highly scalable platform for monolithic photonic integration that enables uncooled EML manufacturing with high chip and TOSA yields and lower cost than competing platforms. The company's 1,310nm EML platform also provides reliability in an uncooled 10Gbps laser source.

"With the new reference design, customers can now upgrade their modules to support industrial temperatures without altering existing designs based on the Vitesse chipset and Apogee Photonics uncooled 1,310nm EML," said Aaron Bond, VP of marketing and business development at Apogee Photonics.

Interrante added that customers in Asia using their new reference design will experience faster evaluation time and shorter time to market.

The VSC7982 XFP PRO driver is already available, along with an evaluation board and the reference design with Apogee Photonics' 10T3081 TOSA. The 10T3081 TOSA with LC-receptacle is sampling and will be available in commercial quantities in Q4 of 2005. Apogee Photonics is offering the TOSA in a Telcordia-qualified, low-cost, TO-41-based package that will also be available in an RoHS-compliant option.

- Margarette Teodosio
Electronic Engineering Times-Asia

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