Multilayer graphene-dielectric artificial metamaterials exhibit a variety of regimes in the terahertz/infrared range. They change their electromagnetic response from lossy dielectric and low-loss dielectric to metallic and ENZ material. The remarkable tunability of graphene allows one to switch between these regimes by changing the graphene’s Fermi energy level. Using this fact, we demonstrate the employment of such composite materials for waveguide-integrated modulators with very high modulation depth and extreme sensitivity towards graphene’s Fermi energy; tunable waveguide-based passband filters; slot-waveguide phase shifters; tunable lenses; and other terahertz and infrared devices.

Irina Khromova is currently an Assistant Professor at the Department of Electrical and Electronic Engineering of the Public University of Navarra (Spain) and a Researcher at the ITMO University (Russia). She received a PhD in Physics and Mathematics in 2008 and a PhD in Telecommunications Engineering in 2011.

She was a visiting researcher at Helhmoltz University, Germany, 2003; Macquarie University, Australia, 2009; Technical University of Eindhoven, Netherlands, 2010; Saratov State Technical University, Russia, 2011; and Technical University of Denmark, 2013.

Irina Khromova received the Dynasty Foundation award for young scientists in 2003, 2004, and 2005; and the best paper awards at Laser Optics 2006, Fiber Lasers 2008, Metamorphose Student Seminar 2008, and Metamaterials 2009. Currently, Irina’s field of scientific interest includes graphene metamaterials, anisotropic and complex periodic media, carbon nanomaterials, optical fibres and tunable THz devices