title: Thermo-optic mode extinction modulator based on graphene plasmonic waveguide.
abstract: We developed a thermo-optic (TO) mode extinction modulator based on graphene plasmonic waveguide. For compact device design and fabrication, the graphene plasmonic waveguide and heating element are configured all-in-one. Thermally induced inhomogeneous refractive-index distribution of the polymer near the microribbon cut off the long-range surface plasmon polariton (LRSPP) stripe mode propagating along a graphene microribbon. Numerical modeling are conducted on the time-dependent temperature (and hence the refractive-index) distribution by resistive heating element inside the graphene TO modulator. Experimental results demonstrate 30 dB attenuation with 12 mW electrical power injection at a telecom wavelength and exhibit a good agreement with the thermal modeling.
authors.affiliation: Creative Research Center for Graphene Electronics, Electronics and Telecommunications Research Institute (ETRI), 218 Gajengno, Yuseong, Daejeon 305-700, South Korea. jintae@etri.re.kr
authors.forename: Jin Tae
authors.initials: JT
authors.lastname: Kim
authors.forename: Kwang Hyo
authors.initials: KH
authors.lastname: Chung
authors.forename: Choon-Gi
authors.initials: CG
authors.lastname: Choi