• Multilayer traffic engineering
• Impact of physical layer impairments on optical networks design
• Resource virtualization in transparent WDM networks for Grid services
• New generation WDM flexible optical access systems for fixed-mobile broadband services
• Dynamic bandwidth allocation and service disciplines in Ethernet PON (EPON) access systems

From 1995 to 2000

• Available Bit Rate (ABR) traffic management in ATM networks (with CELAR laboratories of French DGA)
• ATM traffic management in APON optical access systems (with Alcatel-Bell Antwerp, Belgium)
• Dynamic flow control in Frame Relay networks
• Video-broadcasting over ADSL access systems (within the European ITEA BRIC project)

From 1990 to 1995

• Load balancing and data/voice integration in IEEE 802.6 Matropolitan Area Networks (with Alcatel Business Systems)
• Real-time multipoint transport protocol for embedded networks (with Dassault Electronique)
• In charge of the ETTON project (Ethernet Technologies on Transparent Optical Networks)