▎ 摘　　要

Application of Bragg gratings for mid-infrared requires a mu m-scale area, while novel on-chip integrated circuits require nm-scale devices. Integrating the Bragg grating with a graphene nanoribbon (GNR), it is possible to scale down the Bragg grating overall footprint to nm-scale sizes and still benefit from their special abilities in light confinement to control mid-infrared transmissions. A band-stop and a narrow band-pass filter are realized using perfect and defected Bragg gratings, respectively. The experimentally feasible values such as doping level and electron relaxation time are implemented for this study to avoid the limiting factor of device performance. The findings of this report quantitatively demonstrate high performance of this plasmonic based GNR assisted device.