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Helios Aids Connections to CMOS

Photonics.com
Jan 2010
GRENOBLE, France, Jan. 15, 2009 – The nearly two dozen members of Helios (photonics electronics functional integration on CMOS) have met or exceeded their phase-one goals for the large-scale CMOS photonics project, according to Leti, a Grenoble-based research firm that is coordinating the European consortium.

Launched by the European Commission in 2008, the €8.5 million project is designed to develop microelectronics fabrication processes for integrating photonics with CMOS circuits and to make the technology available to a wide variety of users.

The participants include the major European CMOS photonics and electronics research centers and companies as well as potential users of the technology. The project will drive the European research and technological development (RTD) in CMOS photonics and pave the way for industrial progress.

First-phase achievements of Helios have concentrated on photodetection and light coupling/routing. Successfully completed milestones include characterization of vertical and lateral p-i-n germanium and III-V metal-semiconductor-metal photodetectors, showing low dark current, high optical responsivity and high optical bandwidth compatible with 40 Gb/s operation; demonstration of germanium photodiode bandwidth of 90 GHz; demonstration of inverted taper coupling structure with 1-dB coupling loss; design and fabrication of a transition between rib/strip waveguides with less than 0.2 dB measured losses; demonstration of a high-efficiency grating coupler showing a coupling efficiency of –1.6 dB and a 3-dB bandwidth of 80 nm; more than 30 publications in international conferences or journals; and organization of a winter school and two international events.

“Europe has a well-established photonics components industry and it is strategically important for us to maintain photonic chip design and chip-integrating functions that provide new opportunities for our microelectronics companies and enable us to compete with other countries,” said Laurent Malier, CEO of Leti. “Helios combines the advanced, upstream research on CMOS photonics from leading research laboratories and universities with the commercialization expertise of some of Europe’s leading technology companies that will make this technology commercially viable.”

According to the group, CMOS photonics is an intensely active research topic in many countries around the world, which increases the urgency for innovative results from Helios, and the project’s success in developing microelectronics fabrication processes for integrating photonics with CMOS circuits would cement Europe’s role as a global leader in this emerging technology.

The group’s projects are also expected to have a major effect on the industry by, for example, leading to low-cost solutions for a range of applications, including optical communications; optical interconnections between semiconductor chips and circuit boards; optical signal processing; optical sensing; and biological applications. By integrating optics and electronics on the same chip, high-functionality, high-performance and highly integrated devices can be fabricated, while using a well-mastered microelectronics fabrication process. In addition, advances in CMOS photonics will move the emphasis from device component to architecture. Industrial and RTD efforts then could be focused on new products or new functionalities rather than on the technology level.

The four-year Helios project includes the development of such essential building blocks as efficient sources (silicon-based and heterogeneous integration of III-V on silicon), fast modulators and, more long term, the combination and packaging of these building blocks for the demonstration of complex functions to address a variety of industrial needs. These include a 40-Gb/s modulator on an electronic IC, a 16 × 10 GB/s transceiver for WDM-PON applications, a photonic QAM-10-Gb/s wireless transmission system, and a mixed-analog and digital transceiver module for multifunction antennas.

Other top priorities of the project are:

·         Development of high-performance generic building blocks that can be used for a broad range of applications, ranging from WDM sources by III-V/Si heterogeneous integration, fast modulators and detectors, passive circuits and packaging;

·         Building and optimizing the entire supply chain to fabricate complex functional devices. Photonics/electronics convergence will be addressed at the process level and also at the design level as HELIOS helps develop an adequate design environment;

·         Investigating promising approaches that offer clear advantages in terms of integration on CMOS for next-generation CMOS photonics devices; and

·         Road mapping, dissemination and training to strengthen European activities in this field and to increase awareness of new users about the potential of CMOS photonics.

As coordinator of Helios, which includes nearly 60 researchers from member organizations, Leti is responsible for the technical, administrative and financial management of the project and for the day-to-day technical monitoring, direction and progress on the project. Leti also is a key contributor to the development of building blocks and integration processes that are part of Helios.

In addition to Leti, the Helios partners are IMEC (Belgium), CNRS (France), Alcatel Thales III-V lab (France), University of Surrey (UK), IMM (Italy), University of Paris-Sud (France), Technical University of Valencia (Spain), University of Trento (Italy), University of Barcelona (Spain), 3S Photonics (France), IHP (Germany), Berlin University of Technology (Germany), Thales (France), DAS Photonics (Spain), austriamicrosystems AG (Austria), Technical University of Vienna (Austria), Phoenix BV (Netherlands) and Photline Technologies (France).

For more information, visit: www.helios-project.eu

 

 



GLOSSARY
germanium
A crystalline semiconductor material that transmits in the infrared.
optical communications
The transmission and reception of information by optical devices and sensors.
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