PhD: Development of a predictive model for determining the spectral dependence of radiation-induced attenuation (RIA) in optical fibers
Expected start date: Oct 1st 2026
Duration: 36 months
Application deadline: March 20th 2026.
Location: Laboratoire Hubert Curien, Saint-Etienne, France
This PhD will focus on the development of a predictive, multi-scale, and multi-physics model for the spectral dependence of Radiation-Induced Attenuation (RIA) in silica-based optical fibers exposed to harsh radiative environments. The work will integrate numerical modeling of point defect generation, recombination, and temperature-dependent dynamics with experimental spectral characterizations and irradiation campaigns (notably on the PETRA platform for X-rays and through external collaborations for other particles), in order to establish quantitative links between key influencing parameters - fiber composition, operating wavelength, total ionizing dose, dose rate, and temperature - and the resulting RIA evolution, ultimately enabling more reliable design of optical systems and sensors for applications in space, nuclear fusion and fission, and medical contexts.
Prerequisites:
We are looking for candidates who meet the following criteria:
- Master's degree or engineering diploma in applied physics, optics, photonics or materials science.
- Interest in multi-scale and multi-physics phenomena, combining modeling, theory and experimentations.
- Analytic and experimental skills proven by MSc-work or work experience.
- Good knowledge of scientific tools such as Python or Matlab.
- Positive attitude towards a multidisciplinary environment with multiple stakeholders.
- Good knowledge of the English language (oral and writing) and/or of French language.
- Good communications skills (soft skills), and the ability to work in collaboration with industry.
- Scientific curiosity and experimental rigor.
- Capability to synthesize and communicate scientific results for use in institutional and industrial projects.
The following additions would be a great asset:
- Experience in spectroscopy, optical measurements and fiber characterization techniques.
- A background in fiber optics and materials physics.
Download the detailed offer here
Information and application: CV, cover letter and copy of ID document to be sent to:
Prof. Adriana MORANA (PhD thesis supervisor): adriana.morana @ univ-st-etienne.fr
Note: All employment at the Hubert Curien Laboratory is decided on the sole basis of qualifications, competence, integrity and organizational need. All are encouraged to apply to job openings regardless of their origin, identity, health, beliefs and orientations.