Optical absorption in graphene integrated on silicon waveguides
arXiv:1205.4050 · doi:10.1063/1.4752435
Abstract
To fully utilize graphene's remarkable optical properties for optoelectronic applications, it needs to be integrated in planar photonic systems. Here, we demonstrate integration of graphene on silicon photonic circuits and precise measurement of the optical absorption coefficient in a graphene/waveguide hybrid structure. A method based on Mach-Zehnder interferometry is employed to achieve high measurement precision and consistency, yielding a maximal value of absorption coefficient of 0.2 dB/μm when graphene is located directly on top of the waveguide. The results agree with theoretical model utilizing the universal ac conductivity in graphene. Our work provides an important guide for the design and optimization of integrated graphene optoelectronic devices.
14 pages, 4 figures
References in corpus (12)
- Universal Dynamic Conductivity and Quantized Visible Opacity of Suspended Graphene
- Ultrahigh electron mobility in suspended graphene
- Graphene Photonics and Optoelectronics
- Graphene photodetectors for high-speed optical communications
- Measurement of the Optical Conductivity of Graphene
- Universal dynamical conductance in graphite
- The optical conductivity of graphene in the visible region of the spectrum
- Boron Nitride Substrates for High Mobility Chemical Vapor Deposited Graphene
- Visibility of graphene flakes on a dielectric substrate
- Optical absorption in graphene integrated on silicon waveguides
- High-speed waveguide-coupled graphene-on-graphene optical modulators
- Saturation of interband absorption in graphene
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