Back to Search
Start Over
High-speed waveguide-coupled graphene-on-graphene optical modulators.
- Source :
-
Applied Physics Letters . 4/23/2012, Vol. 100 Issue 17, p171107. 4p. 2 Charts, 3 Graphs. - Publication Year :
- 2012
-
Abstract
- 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 120 GHz (30 GHz) are achievable at near- (λ = 1.55 μm) and mid- (λ = 3.5 μm) infrared bands. The effect of background doping and potential fluctuations on the bandwidth, modulation depth, and insertion loss are also quantified. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00036951
- Volume :
- 100
- Issue :
- 17
- Database :
- Academic Search Index
- Journal :
- Applied Physics Letters
- Publication Type :
- Academic Journal
- Accession number :
- 74637477
- Full Text :
- https://doi.org/10.1063/1.4704663