Abstract
Photonic waveguides with graphene layers have been recently studied for their potential as fast and low-power electro-optic modulators with small footprints. We show that in the optical wavelength range of 1.55 μm, surface plasmons supported by the graphene layer with the chemical potential exceeding ~0.5 eV can couple with the waveguide mode and affect its propagation. This effect might be possibly utilized in technical applications as a very low-power amplitude modulation, temperature sensing, etc.
Highlights
Unusual electrical and optical properties of novel twodimensional materials like graphene have revolutionized many branches of science and technology
We show that in the optical wavelength range of 1.55 μm, surface plasmons supported by the graphene layer with the chemical potential exceeding ~0.5 eV can couple with the waveguide mode and affect its propagation
The phase modulation can be accompanied with coupling of the waveguide mode with surface plasmon modes supported by the graphene stripe (“graphene modes”), even at the telecommunication optical wavelength band around 1550 nm [8]
Summary
Unusual electrical and optical properties of novel twodimensional materials like graphene have revolutionized many branches of science and technology. We show that in the optical wavelength range of 1.55 μm, surface plasmons supported by the graphene layer with the chemical potential exceeding ~0.5 eV can couple with the waveguide mode and affect its propagation.
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