Francesco Testa | Ericsson Research Blog

Ericsson Research Blog

Research, insights and technology reflections

Francesco Testa

Francesco Testa is a Principal Researcher at Ericsson Research in Pisa, Italy, focusing on photonics integrated technologies and their system applications. He joined Ericsson in 1991 to work on the first demonstrations of WDM optical transport systems, and later in optical networks architectures and technologies research, followed by several years spent on design of HW circuits and systems for SDH, ATM, LMDS, GSM, DECT and Narrowband Access. Francesco received his degree in Electronic Engineering, summa cum laude, from the University of Rome.

Francesco Testa

Photonic integration becomes a reality

Silicon photonics uses silicon as a miniaturized optical medium for transmitting and switching data at very high speeds. In the recently concluded IRIS project, we demonstrated the full potential of silicon photonics technology, integrating in a silicon chip only a few millimeters large thousands of complex nanoscale optical circuits that are able to process Terabit/s of data, as well as the relevant control electronic circuits.

This is a world record – never before have so many optical circuits been integrated together with their electrical control circuits on the same 3D chip.

What is more, they can be mass produced at low cost and with high miniaturization, unleashing a range of new optical devices for 5G networks, data centers and optical transport networks. The project results exceeded expectations and the integrated switch device performed better than the specifications defined in the early phase of the project. Learn more here!

Read more

Can a CMOS photonics switch transform networks and data centers?

We have fabricated a silicon photonic switch with the highest scale of integration (more than thousand circuits) and the highest number of different functions ever implemented before on a single chip. We are also realizing the most advanced 3D electrical interconnect between a photonic chip and its control electronic chip.

This was done as part of IRIS, a 7th Framework Program for Research and Technological Development (FP7). In this post we’ll share details about the progress we have made recently in the project.

Read more