Photonics Research, 2017, 5 (6): 06000762, Published Online: Dec. 7, 2017
Capacitive actuation and switching of add–drop graphene-silicon micro-ring filters
(250.5300) Photonic integrated circuits (230.0250) Optoelectronics (130.3120) Integrated optics devices.
Abstract
We propose and experimentally demonstrate capacitive actuation of a graphene–silicon micro-ring add/drop filter. The mechanism is based on a silicon–SiO2–graphene capacitor on top of the ring waveguide. We show the capacitive actuation of the add/drop functionality by a voltage-driven change of the graphene optical absorption. The proposed capacitive solution overcomes the need for continuous heating to keep tuned the filter’s in/out resonance and therefore eliminates “in operation” energy consumption.
Tommaso Cassese, Marco Angelo Giambra, Vito Sorianello, Gabriele De Angelis, Michele Midrio, Marianna Pantouvaki, Joris Van Campenhout, Inge Asselberghs, Cedric Huyghebaert, Antonio D’Errico, Marco Romagnoli. Capacitive actuation and switching of add–drop graphene-silicon micro-ring filters[J]. Photonics Research, 2017, 5(6): 06000762.