Jobs bei CNRS in United States

Organisation/Company: CNRS

Department: Institut de physique de Nice

Research Field: Engineering Physics

Researcher Profile: First Stage Researcher (R1)

Country: France

Application Deadline: 10 Jul 2025 - 23:59 (UTC)

Type of Contract: Temporary

Job Status: Full-time

Hours Per Week: 35

Offer Starting Date: 1 Oct 2025

Is the job funded through the EU Research Framework Programme? Horizon Europe - MSCA

Is the Job related to staff position within a Research Infrastructure? No

Over the past four decades, glass, glass-ceramics, and composites have contributed to significant socio-economic advances as high-tech materials. To remain competitive against emerging economies like China and India, the European glass sector must focus on research and innovation to develop new materials and train specialists in this promising market.

This challenge is central to the 'Structured functional glasses for lasing, sensing and health applications' (FunctiGlass) project, which focuses on advanced high-tech materials for light sources, sensors, and biological applications. Coordinated by CNRS, FunctiGlass is an interdisciplinary research and training program within Horizon Europe's Doctoral Networks (Marie-Sklodowska Curie Actions, project 101169415). It aims to train 11 doctoral candidates through a joint research training program, fostering collaboration between academia and industry across 11 academic environments and 9 non-academic environments in 9 countries.

Each PhD candidate will be supervised by two academic tutors from different countries and one industrial mentor, ensuring cross-sector knowledge sharing and skill acquisition, especially in entrepreneurship and innovation. The program is designed to prepare future leaders in glass science and glass-based nano/micro-structured materials, promoting innovation paths in academia or industry.

The project will facilitate long-term relationships between academic and private sectors for technology transfer and skills development. Degrees will be awarded by five institutions: Université Côte d'Azur (France), Tampere Universities (Finland), Leibniz University Hannover (Germany), University Milano-Bicocca (Italy), and the Institute of Low Temperature and Structure Research, Polish Academy of Sciences (Poland).

Industrial partners include AOI Tech, Corning, Fastlite, Klearia (France), Else Nuclear (Italy), Nobula3D (Sweden), Nyfors Teknologi (Sweden), Rosendahl Nextrom (Finland), and Scout Scientific Outsourcing (Poland). Other universities involved are University of Cergy-Pontoise (France), University of Gent (Belgium), University of Pardubice (Czech Republic), University of Nazarbayev (Kazakhstan), and Umeå University (Sweden).

Optical fibers have revolutionized telecommunications, laser technology, and sensing. A key property is silica glass's ultra-transparency. Conversely, light scattering techniques, which induce optical losses, are exploited to develop distributed optical sensors and narrow linewidth fiber lasers by inserting nanostructures into the fiber core, either directly or via femtosecond laser irradiation. This technique enables fabricating nanogratings with controlled properties, crucial for device performance.

This thesis will study light scattering caused by femtosecond laser inscribed nanogratings in single-mode and multimode silica optical fibers. The work involves optimizing nanostructure formation using computational electrodynamics, numerical simulations, and inverse design methods to control scattering and mode coupling in both linear and nonlinear regimes. Subsequently, fabrication of nanogratings via direct laser writing (DLW) and experimental characterization will be conducted.

The objectives are to:

• Optimize nanograting formation through inverse design techniques for scattering and mode coupling control.
• Simulate light propagation in nanostructured optical fibers.
• Fabricate nanogratings in fiber cores.
• Characterize optical properties such as attenuation, backscattering, and mode coupling.