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Nonlinear Graphene Plasmonics: Towards All-Optical Light Manipulation on a Chip

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  • Full or part time
    Dr Andrey Gorbach
  • Application Deadline
    Applications accepted all year round

Project Description

Main supervisor: Dr. Andriy Gorbach
Second supervisor: Prof. Dmitry Skryabin

This project will focus on theoretical and numerical studies of the novel platform for light guidance and manipulation at miniature nano-metre scale: graphene plasmonic circuits. Similar to thin metal films, graphene supports propagation of surface plasmon polariton (SPP) waves, characterized by extreme confinement of electromagnetic energy on sub-wavelength nano-metre scale. The advantages of graphene SPPs over their conventional metal analogues include:
• Much lower losses, particularly in mid-infrared
• Tunable optical response, including dynamical tuning via voltage gating
• Strong localization of graphene SPPs in a wide wavelength range
• Exceptionally strong nonlinearity of graphene
In this project you will focus on development of nonlinear elements of graphene SPP-based plasmonic circuits, including nonlinear waveguide couplers and arrays, X- and Y-splitters, ring resonators, periodic structures. Project tasks include:
• Derivation of slow-light type models for analysis of graphene SPP propagation in various planar structures, starting from Maxwell equations with nonlinear boundary conditions.
• Numerical modelling of nonlinear graphene SPP propagation, switching, frequency conversion.
• Perturbation analysis of nonlinear stationary modes.
Design of functional all-optical logic elements.
Applicants should have a background in the physical sciences and have or expect to gain a First or good Upper Second Class UK Honours degree, or the equivalent from an overseas University.

Contact Dr. Andriy Gorbach ([email protected], http://people.bath.ac.uk/ag263) for further information.

Funding Notes

We welcome applications all year round from self-funded candidates and candidates who can source their own funding.


[1] A. V. Gorbach, Phys. Rev. A 87, 013830 (2013).
[2] A.V. Gorbach, Photonics 2, 825 (2015).
[3] H. Yan, T. Low, W. Zhu, Y. Wu, M. Freitag, X. Li, F. Guinea, P. Avouris, and F. Xia, Nat. Photonics 7, 394 (2013)

How good is research at University of Bath in Physics?

FTE Category A staff submitted: 23.00

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