University of Paris Sud

Description of the organisation


IEF (Institut of Fundamental Electronics) is a joint research unit between CNRS and University of Paris Sud (PSUD) located at the scientific center of Orsay.


The staff is composed about 33 researchers, 52 professors and assistant-professors, 52 engineers, technicians and administrative staff, 70 PhD students, 20 non-permanent researchers including post-doctorate researchers, invited researchers, contractual staff, etc… PSUD/IEF received about 80 training students per year.


The research carried out at PSUD/IEF focuses on silicon-based nano-electronics (i), nanomagnetism and spin electronics (ii), micro-nanophotonics and optoelectronics either based on silicon or III-V semiconductors (iii), microsystems including their fabrication and characterization (iv), and autonomous systems and network systems.


Within PSUD/IEF, the silicon photonic group has developed for several years a strong expertise on passive and active photonic devices on silicon with several breakthroughs on optical modulator using SiGe/Si, Ge/SiGe and silicon structures, on germanium photodetectors, on passive circuitry to route the optical signal on a silicon chip... The main applications are optical telecommunications, interconnects in CMOS circuits and biophotonics. The group was or is involved in European projects STREP FP6 SABIO, REX FP6 ePIXnet, IP FP7 HELIOS and PLAT4M, FET FP7 CARTOON, ERC INsPIRE and POPSTAR and several national projects on silicon-based photonics.


Role in the project


IN COSMICC, UPS is involved in WP2, WP3 and WP6. WP2: UPS will co-design capacitive modulators. WP3: UPS will perform the performances analysis and device/PIC evaluation and design adv-PIC A with CEA. WP6: UPS will participate to the dissemination

Main contact

Dr Delphine Marris-Morini

Universite Paris Sud,

15avenue Georges Clémenceau

91405 Orsay Cedex




Key people involved

Dr Laurent Vivien (male) has joined the CNRS at the Institute of Fundamental Electronics (IEF) – University of Paris-Sud, Orsay, France in 2003. His activities are about silicon photonics, Germanium photonics and carbon nanotubes photonics from the passive to optoelectronic devices. Since 2006, he leads the silicon photonics group at IEF ( Dr. Laurent Vivien is currently involved in several Regional, National and European projects as coordinator, workpackage or task leader. He has published more than 100 papers in international journals and more than 100 communications in national and international conferences. He also contributed to several books on silicon photonics and he is holder of 6 patents. He received recently an ERC consolidator grant (POPSTAR) to develop silicon optoelectronic devices for high speed multiple wavelength optical links for data communication applications.

Dr Delphine Marris-Morini (female) is professor at the University of Paris. Her research activities are devoted on efficient and high speed silicon optoelectronic devices for future integrated circuits. She is involved in national and European projects (REX FP6 ePIXnet, IP FP7 HELIOS and PLAT4M) where she is in charge of silicon modulator activities. She supervised PhD students working on low power consumption silicon modulators, in UPSUD/IEF, CEA-LETI and ST Microelectronics. Since 2009 she developed in parallel a new research activity about the optical properties of Ge/SiGe Multiple Quantum Well (MQW) structures for silicon photonics, in collaboration with L-Ness lab (Como – Politecnico di Milano, Italy). She published more than 70 papers in international journal and more than 100 communications in international conferences. She received the bronze medal from CNRS in 2013, and received recently an ERC starting grant (INsPIRE) to develop mid-IR photonics chips based on Ge/SiGe QW.