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Portail > Offres > Offre UMR7252-BENWET-001 - Chercheur Postdoctoral en Photonique (H/F)

Postdoctoral Researcher in Photonics (M/F)

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

Date Limite Candidature : jeudi 10 décembre 2020

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General information

Reference : UMR7252-BENWET-001
Workplace : LIMOGES
Date of publication : Thursday, November 19, 2020
Type of Contract : FTC Scientist
Contract Period : 12 months
Expected date of employment : 1 March 2021
Proportion of work : Full time
Remuneration : between 2648.59 € and 3938.59 € monthly gross salary (depending on experience between 0-10 years)
Desired level of education : PhD
Experience required : Indifferent


A renewable postdoctoral position is available within the framework of the ERC-funded project STREAMLINE.The research topic is "Smart & coherent control of nonlinear effects in guided optics".

The applicant will dedicate his/her time on a new and exciting research activity involving the control of nonlinear dynamics and ultrafast phenomena in guided optics (frequency conversion processes, modulation instability, soliton dynamics, supercontinuum generation, etc.). Several pulse processing approaches and optical platforms (monomode fibers, multimode fibers, photonics integrated circuits) will be implemented and tested for the optimization of selected optical wavepackets properties (spectro-temporal characteristics, as well as spatial shaping in multimode fibers) towards the development of “smart photonics sources”.

The position is predominantly experimental, but is also highly multidisciplinary, spanning numerical and theoretical studies of fundamental nonlinear optical dynamics, the implementation of machine learning optimization schemes, and further applications towards innovative computational imaging techniques.

• B. Wetzel, et al. Customizing supercontinuum generation via on-chip adaptive temporal pulse-splitting, Nature Communications, 9, 4884 (2018).
• R. Florentin, et al. Shaping the light amplified in a multimode fiber, Light: Science & Applications, 6, e16208 (2017)
• K. Krupa, et al. Spatial beam self-cleaning in multimode fibres, Nature Photonics, 11, 237 (2017).

Keywords: Nonlinear photonics, Fiber optics, Integrated optics, Ultrafast characterization, Optical pulse processing, Coherent control, Machine learning, Nonlinear microscopy & imaging.


- The researcher will carry out diversified activities on optical pulse shaping & coherent control, fiber & integrated nonlinear optics, as well as ultrafast optical characterization.

- He/she is expected to conduct, with a good level of scientific independence, the experiments and numerical simulations in line with the research goals of the STREAMLINE project.

- In this context, the researcher will be responsible of the setup, implementation and progressive upgrade of a complete ultrafast optical processing and characterisation bench in the laboratory.
-This includes the interfacing of equipment for data acquisition and automatised optical control/processing towards AI-based optimization.
- This further encompasses, as part of the team, the development of homemade specialty optical characterization tools (e.g. FROG/X-FROG based systems) as well as the implementation (and eventual design) of dedicated photonics integrated systems.

- The researcher will be directly involved in group management tasks, including the scheduling and daily oversight of research activities, as well as the tutoring/co-supervision of graduate and PhD students.
- He/she is further expected to progressively gain an executive role by contributing to e.g. decisions on scientific orientations and planning, reporting tasks, funding and fellowship applications, etc.

- As part of the his/her activities, the researcher will communicate on his/her scientific results via peer-reviewed publications and conference contributions/presentations.
- He/she will also be encouraged to take part in further outreach activities with a broader audience (e.g. Science Festival, European Researcher Night…) and contribute to the scientific community (with e.g. article review, proposal expertise, conference committees).


- The applicant will hold a PhD in Photonics, Experimental Physics or Electrical Engineering (or similar).
- The applicant will possess a strong background in Nonlinear guided optics and/or Ultrafast photonics.
- Excellent experimental skills in fibered and/or guided optics are necessary (fibered and/or integrated platforms).
- Good knowledge of Ultrafast optical instrumentation (e.g. OSA, RF analyzer, ultrafast oscilloscope, pulse shaper, autocorrelator, FROG/SPIDER, real-time measurement techniques, EO modulators…) and/or Laser sources (e.g. laser oscillators, mode-locked fiber lasers, OPOs, EDFAs) is requested.
- Strong numerical proficiencies with Matlab (and/or Python) for numerical simulations (e.g. NLSE-based pulse propagation) and experimental interfacing/adaptive control is paramount importance.
- Good writing skills and English level is requested from the applicant.
- The applicant will be proactive and possess good communication skills allowing for efficient teamwork.
- The applicant will have demonstrated creative & independent thinking though his/her past achievements.

Further skills and knowledge that are directly relevant to the position:

- Scientific and experimental background in Multimode optical fibers and/or Photonic integrated systems.
- Proficiencies in Machine-learning & Adaptive control tools and techniques (e.g. feedback loops, ANNs, GAs).
- Proficiencies in optical waveguides/PIC design using FDTD or mode solvers (via e.g. COMSOL, Lumerical).
- Basic programing skills in C/C++ and proficiencies with Electronic microcontrollers (MCU).
- Proficiencies in Imaging systems, Multiphoton microscopy, Biological Imaging.
- Basic level of French to ensure efficient communication with administration and smooth integration.

Work Context

The successful applicant will integrate the Xlim Research Institute on the geographical site of Limoges (France), a city with 130,000 inhabitants at the heart of the Région Nouvelle-Aquitaine and recognized for the quality of its lifestyle.

Xlim is a multidisciplinary research institute (UMR - CNRS 7252), in association with the National Center for Scientific Research (CNRS). The institute brings together over 500 academics, researchers, technical staff and doctoral students with an expertise spanning broad areas of electronics & microwaves, optics & photonics, mathematics, computer sciences and image processing.

For this position, the selected researcher will join the Photonics Department of Xlim and work under the supervision of Dr. Benjamin Wetzel (Projetc coordinator). He/she will conduct research at the interface of the PhoCal team (Laser sources & Coherent control) and the BioPhot team (Biophotonics & Imaging) within the framework of an ERC Starting Grant project (STREAMLINE) that will start in February 2021.

- More information on the latest research activities here: www.smartphotonics.net

- More information on STREAMLINE project here: www.streamline-project.com

Constraints and risks

• The laboratory is equipped with femtosecond lasers (up to Class 3) for which suitable protections are provided.

• The Xlim Research Institute is within a restrictive area (ZRR) for which an access agreement must be obtained from relevant governmental institutions (application reviews can take up to 8 weeks).

Additional Information

- CV including at least one recommendation and a motivation letter are requested.

- More information on STREAMLINE project here: www.streamline-project.com

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