High-speed waveguide-coupled graphene-on-graphene optical modulators
By Steven J. Koester, Mo Li. 2012
174 citations recorded by the source corpus.
An electro-absorption optical modulator concept based upon a dual-graphene layer is presented. The device consists of a silicon-on-insulator waveguide upon which two graphene layers reside, separated by a thin insulating region. The lower graphene acts as a tunable absorber, while the upper layer functions as a transparent gate electrode. Calculations based upon realistic graphene material properties show that 3-dB bandwidths over 100 GHz (30 GHz) are possible at near- (\lambda=1.55 \mu m) and mid- (\lambda=3.5\mu m) infrared bands. The effect of background doping and potential fluctuations on the bandwidth, modulation depth and insertion loss are also quantified.
Subfields: Biomedical Engineering, Electronic, Optical and Magnetic Materials, Materials Chemistry
View Paper: https://www.semanticscholar.org/paper/1ccd390ffb4e548fc8cfccaf42eb60011460a802
How researchers see this paper
The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.
In Biomedical Engineering
In Materials Chemistry
Citations in the corpus
- Graphene synthesis, characterization and its applications in nanophotonics, nanoelectronics, and nanosensing (2015, background): “[177] where a graphene-on-graphene design is suggested.”
- Broadband 10 Gb/s operation of graphene electro‐absorption modulator on silicon (2016, methodology): “The total capacitance CGOS of the GOS structure consists of the oxide capacitance Cox, the quantum capacitance of the graphene layer Cg, qua [19] and the capacitance of the surface space charge layer in silicon Cs.”