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Ph.D. offer to study all-optical control techniques applied to array of micro-photonic waveguides

This offer is available in the following languages:
Français - Anglais

Date Limite Candidature : jeudi 4 février 2021

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General information

Reference : UMR6303-PIECOL-002
Workplace : DIJON
Date of publication : Thursday, December 24, 2020
Scientific Responsible name : Pierre COLMAN
Type of Contract : PhD Student contract / Thesis offer
Contract Period : 36 months
Start date of the thesis : 1 September 2021
Proportion of work : Full time
Remuneration : 2 135,00 € gross monthly

Description of the thesis topic

The Soliton, Laser, & Optical Communication team at the ICB Lab1 (Dijon, France) is hiring a Ph.D. student to investigate all-optical control in arrays of micro-photonic waveguides.
The equations that govern the propagation of light in waveguide arrays bare strong similarities with the Schrödinger equation which describes the temporal evolution of quantum systems2. As such, optical effects analogue to the Bloch Oscillations or dynamic localization have been demonstrated3. Previous limitations in the nano-fabrication processes restricted the experimental investigations to large waveguide arrays: (electronic-like) band effects could be studied, but not the transition between discrete levels of energy. Nowadays, it can be possible to implement optically the techniques used to control excitons in Quantum Electro-Dynamics (QED).
The first outcome of this thesis will be the use of QED technique to implement on-chip all-optical control functions such as for instance complex switching and commutation arrays, spectral filters, etc. Then, the impact of the optical nonlinearity – which usually does not exist in QED- will be studied. In particular, we expect to unveil exotic nonlinear propagation regimes that do not have any equivalent in fibers optics. Finally, the geometry of the arrays of waveguides that will be studied here is very close to the toy models used in topological photonics (e.g. the Su-Schrieffer-Heeger model4). Hence, it will be investigated whether a link can be established between QED control in waveguide array and topological optics.
The thesis will take place within the framework of the national ANR-funded project NAC-NIP. This project holds at the same time very fundamental and theoretical aspects, as well as more applied and experimental demonstrations. Suitable candidate must then be eager to work on both aspects of the project.

Work Context

The Soliton, Laser, & Optical Communication (SLCO) team is specialized in nonlinear propagation phénomena in fibers-optics. In particular the team hosts a leading expertise regarding breathers, Rogues waves, and optical condensation phenomena. In collaboration with the small clean room facility ARCEN hosted at the ICB, SLCO is now devoting part of its activities to the study of nonlinear phenomena in micro-photonics.

Additional Information

Thesis in the frame of the national ANR-funded NAC-NIP project.

Tesis may start whenever between June and October 2021

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