title: Few layers graphene as thermally activated optical modulator in the visible-near IR spectral range.
abstract: We report the temperature modulation of the optical transmittance of a few layers of graphene (FLG). The FLG was heated either by the Joule effect of the current flowing between coplanar electrodes or by the absorption of a continuous-wave 532 nm laser. The optical signals used to evaluate the modulation of the FLG were at 633, 975, and 1550 nm; the last wavelengths are commonly used in optical communications. We also evaluated the effect of the substrate on the modulation effect by comparing the performance of a freely suspended FLG sample with one mounted on a glass substrate. Our results show that the modulation of the optical transmittance of FLG can be from millihertz to kilohertz.
authors.forename: J L
authors.initials: JL
authors.lastname: Benítez
authors.forename: Juan
authors.initials: J
authors.lastname: Hernández-Cordero
authors.forename: S
authors.initials: S
authors.lastname: Muhl
authors.forename: D
authors.initials: D
authors.lastname: Mendoza