We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Tunable pattern-free graphene nanoplasmonic waveguides on trenched silicon substrate.
- Authors
Zheng, Jiajiu; Yu, Longhai; He, Sailing; Dai, Daoxin
- Abstract
Graphene has emerged as a promising material for active plasmonic devices in the mid-infrared (MIR) region owing to its fast tunability, strong mode confinement, and long-lived collective excitation. In order to realize on-chip graphene plasmonics, several types of graphene plasmonic waveguides (GPWGs) have been investigated and most of them are with graphene ribbons suffering from the pattern-caused edge effect. Here we propose a novel nanoplasmonic waveguide with a pattern-free graphene monolayer on the top of a nano-trench. It shows that our GPWG with nanoscale light confinement, relatively low loss and slowed group velocity enables a significant modulation on the phase shift as well as the propagation loss over a broad band by simply applying a single low bias voltage, which is very attractive for realizing ultra-small optical modulators and optical switches for the future ultra-dense photonic integrated circuits. The strong light-matter interaction as well as tunable slow light is also of great interest for many applications such as optical nonlinearities.
- Subjects
GRAPHENE; PLASMONICS; SUBSTRATES (Materials science); WAVEGUIDE components; NANOELECTRONICS; OPTICAL modulators
- Publication
Scientific Reports, 2015, p7987
- ISSN
2045-2322
- Publication type
Article
- DOI
10.1038/srep07987