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PhD student (M/F) in silicon optomechanical waveguides

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

Date Limite Candidature : mercredi 5 novembre 2025 23:59:00 heure de Paris

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Informations générales

Intitulé de l'offre : PhD student (M/F) in silicon optomechanical waveguides (H/F)
Référence : UMR9001-CARALO-017
Nombre de Postes : 1
Lieu de travail : PALAISEAU
Date de publication : mercredi 15 octobre 2025
Type de contrat : CDD Doctorant
Durée du contrat : 36 mois
Date de début de la thèse : 1 janvier 2026
Quotité de travail : Complet
Rémunération : 2200 € gross monthly
Section(s) CN : 08 - Micro et nanotechnologies, micro et nanosystèmes, photonique, électronique, électromagnétisme, énergie électrique

Description du sujet de thèse

The objective of this thesis is to study the mechanisms of optomechanical coupling in silicon waveguides with a nanometric core. This work will include the development and optimization of simulation tools for the design of these waveguides, combining numerical results with simplified models based on physical principles to identify the optimal dimensions maximizing coupling efficiency.

The research activity will involve a theoretical study of advanced optomechanical structures to understand their fundamental principles and limitations. It will also include the development of simplified models describing optomechanical coupling, intended to guide the optimization of the waveguide geometry. These models will be validated through experimental characterizations.

Contexte de travail

The Center for Nanosciences and Nanotechnologies - C2N (CNRS/University Paris-Saclay) was established on June 1, 2016, from the merger of two leading laboratories in the Paris region: the Laboratory of Photonics and Nanostructures (LPN) and the Institute of Fundamental Electronics (IEF). In 2018, the teams moved into a building located at the heart of the Paris-Saclay Campus.

The Centre for Nanoscience and Nanotechnology (C2N) is a joint research unit of the CNRS and Université Paris-Saclay, dedicated to nanoscience and nanotechnology. The laboratory conducts research activities mainly in the areas of materials, nanophotonics, nanoelectronics, nanobiotechnologies, and microsystems, addressing both fundamental and applied aspects. C2N hosts a major technological facility, including a cleanroom of nearly 2,900 m² and several platforms for instrumentation and characterization. The unit comprises about 410 people in total, including approximately 120 researchers and faculty members, 80 engineers, technicians, and administrative staff, and around 100 PhD students. The laboratory is organized into several research departments and technological platforms, fostering synergies between electronics, optics, and materials science.
The silicon photonics team belongs to the Photonics Department, which is managed under the supervision of the CNRS.
The position is located in an area subject to the protection of scientific and technical potential (PPST). Consequently, in accordance with regulations, your appointment must be authorized by the competent authority of the Ministry of Higher Education and Research (MESR).

Le poste se situe dans un secteur relevant de la protection du potentiel scientifique et technique (PPST), et nécessite donc, conformément à la réglementation, que votre arrivée soit autorisée par l'autorité compétente du MESR.

Contraintes et risques

Work in experimental laboratory and cleanroom.