The optimisation of next-generation wireless access networks (5G and beyond), linked in particular to the implementation of the Internet of Things, requires the development of new nano-opto-electro-mechanical interfaces (NOEMS). These devices, based on the interaction of electrons, mechanical and electromagnetic waves, perform functions that are essential to communication and information technologies (ICT). In particular, they must convert gigahertz microwave signals, which carry information intended for the user, into optical signals carried in fibres. They must also be compatible with CMOS technology, to guarantee large-scale production.

The project MUSICIANMUltifunctional SIliCon Integrated NOEMS for broadband Access Networks, aims to develop a NOEMS platform that will stand out for its low production cost and its ability to incorporate several functions essential to ICT and the Internet of Things, such as frequency conversion, filtering and multiplexing/demultiplexing. The central element is a high-frequency optomechanical nanocavity, whose role is to bridge the gap between radio-frequency electronics and nanophotonics. This cavity would reduce energy consumption compared with the ICT devices currently favoured, since its use would avoid the use of high-frequency electronic devices, which are bulkier and therefore consume more energy.