1. Department of ElectricalElectronic and Information Engineering ‘Guglielmo Marconi’University of Bolognaviale del Risorgimento 2Bologna40136Italy
2. ICON Photonics2 bis Rue Alfred Nobel77420Champs‐sur‐MarneFrance
3. ESYCOM (EA2552)ESIEE ParisUniversité Paris‐EstCité Descartes, 2 Boulevard Blaise Pascal93162Noisy‐le‐GrandFrance