Highly efficient single-layer graphene electro-absorption modulator.
Opt Lett
; 49(5): 1337-1340, 2024 Mar 01.
Article
en En
| MEDLINE
| ID: mdl-38427007
ABSTRACT
We propose a single-layer graphene electro-absorption modulator (EAM) with an angled waveguide sidewall. By utilizing the hybridization of the TM0 mode and the TE1 mode in the waveguide, the light-graphene interaction is enhanced. A modulation depth of 0.124â
dB/µm and a figure of merit up to 25 are obtained at 1550â
nm. Moreover, we show that the longitudinal electric field plays a significant role in making the optical absorption efficient, which indicates that modulation depth can be increased by enhancing the longitudinal electric field in modulators. This provides a promising solution for the future design of graphene optical modulators.
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01-internacional
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MEDLINE
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En
Revista:
Opt Lett
Año:
2024
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Article