Broadband silicon optical modulator using a graphene-integrated hybrid plasmonic waveguide.
Nanotechnology
; 26(36): 365201, 2015 Sep 11.
Article
en En
| MEDLINE
| ID: mdl-26293975
ABSTRACT
Graphene is an excellent electronic and photonic material for developing electronic-photonic integrated circuits in Si-based semiconductor devices with ultra wide operational bandwidth. As an extended application, here we propose a broadband silicon optical modulator using a graphene-integrated hybrid plasmonic waveguide, and investigate the optical characteristics numerically at a wavelength of 1.55 µm. The optical device is based on the surface plasmon polariton absorption of graphene. By electrically tuning the graphene's refractive index as low as that of a noble metal, the hybrid plasmonic waveguide supports a strongly confined highly lossy hybrid long-range surface plasmon polariton strip mode, and hence light coupled from an input waveguide experiences significant power attenuation as it propagates along the waveguide. Over the entire C-band from 1.530 to 1.565 µm wavelengths, the on/off extinction ratio is larger than 13.7 dB. This modulator has the potential to play a key role in realizing graphene-Si waveguide-based integrated photonic devices.
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1
Banco de datos:
MEDLINE
Asunto principal:
Refractometría
/
Silicio
/
Grafito
Idioma:
En
Revista:
Nanotechnology
Año:
2015
Tipo del documento:
Article