Abstract
We perform experimental investigations on the characteristics of graphene-based plasmonic waveguides for development of photonic integrated circuits. By embedding chemical vapor deposited graphene strip in a photoactive UV curable perfluorinated acrylate polymer with a low refractive index and material loss, the two-dimensional metal-like plasmonic waveguide demonstrated as a light signal guiding medium for high-speed optical data transmission. The fabricated graphene-based plasmonic waveguide supports the transverse-magnetic (TM) polarization modes with the averaged extinction ratio of 19 dB at a wavelength of 1.31 µm. The 2.5 Gbps optical signals were successfully transmitted via 6 mm-long graphene plasmonic waveguides. The proposed graphene-based plasmonic waveguides can be exploited further for development of next-generation photonic integrated circuit and devices.
Highlights
Surface plasmon polaritons (SPPs), the coupling between collective excitations of free electrons in a metal and electromagnetic waves, are supported at the metal-dielectric interface
We demonstrate experimentally that graphene-based plasmonic waveguides are served as a light signal guiding medium for optical signal transmission
We investigated the characteristics of the graphene-based plasmonic waveguide for optical signal transmission
Summary
Surface plasmon polaritons (SPPs), the coupling between collective excitations of free electrons in a metal and electromagnetic waves, are supported at the metal-dielectric interface. Numerous plasmonic waveguide architectures have been investigated for development of on-chip nano-photonic devices [1]. Based on metal strip optical waveguide, numerous optical devices and telecom sub-systems have been demonstrated [2,3]. Metal-based plasmonic waveguides offer potential for the development of novel optical devices, lack of the functionality of metal presents a drawback in explosive further applications. An experimental result shows that a graphene polarizer can support TE-mode surface wave propagation [8], more elucidate experimental demonstration is highly necessary to support these theoretical investigations. We demonstrate experimentally that graphene-based plasmonic waveguides are served as a light signal guiding medium for optical signal transmission. A 2.5 Gbps optical signal transmission experiment was performed using the fabricated graphene plasmonic waveguide
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