Numerical Simulation of an Optoelectronic System for Satellite-to-Ground Optical Communications F/H

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Published on 22/10/2026

  • Contract type:  Internship - 6 months

  • Work time:  Full time

  • Location Rennes

The company

Founded in 2013, Cailabs designs, manufactures, and develops innovative photonic solutions for the space, industry, telecommunications, and defense sectors. A global specialist in laser shaping, the company has accelerated its growth in the space field with turnkey optical ground stations that integrate atmospheric turbulence compensation technology. This makes it one of the first companies to harness very high data rates enabled by optics in a commercial ground station.

Cailabs currently has more than 200 employees, including 41PhDs. With 29 patent families filed, the company is one of the most innovative companies in France. It is headquartered in Rennes, with offices in Paris and Washington (USA).

Post description

Les communications laser constituent la prochaine génération de communications spatiales sécurisées et à haut débit. Dédiée aux communications optiques en espace libre, la solution TILBA améliore la fiabilité des liaisons satellitaires mais aussi navale, aéronautiques (avions, drones) ou terrestres. 

Vous travaillerez dans l’équipe R&D sous la responsabilité d’un docteur en physique, ingénieur R&D et expert en simulations numériques. Le projet de stage vise au développement et l’amélioration de systèmes optiques et opto-électroniques utiles pour la solution TILBA grâce à des simulations numériques représentatives des composants réels. Dans le cadre de ce stage, vous mettrez en pratique vos connaissances en programmation Python, en optiques géométrique et ondulatoire et en optoélectronique (par exemple pour modéliser des effets de bruit de capteurs). Les tâches pourront être adaptées selon votre parcours et vos intérêts. 

Votre travail profitera à l’ensemble du département de R&D pour adresser des problèmes d’optique dans le domaine du spatial. 

 

Votre objectif consistera à développer un système opto-électronique en simulation numérique permettant d’améliorer nos systèmes de la gamme de produit TILBA destinés aux communications spatiales.  

Vous aurez l’occasion de mobiliser et d’améliorer vos connaissances scientifiques, et vous apprendrez à travailler en équipe en entreprise sur des thématiques concrètes. 

 

Le stage est à pourvoir au 1er semestre 2027 pour une durée de 3 à 6 mois. 

Profile required

Key skills:

  • Strong interest in programming and numerical simulation
  • Academic background in optics

Nice to have:

  • Programming skills, particularly in Python
  • Interest in applied research
  • Thoroughness, motivation and ability to work independently

Work environment:

  • A fast-growing, innovative company
  • A young and dynamic team
  • 35-hour working week, Monday to Friday

By joining Cailabs, you will find:

  • A dynamic team of engineers and PhDs who share your enthusiasm for applying their expertise to stimulating technical challenges
  • A collaborative environment offering intellectually stimulating work
  • A cutting-edge technology company, working from prototype development through to industrialization

And also:

  • Plenty of opportunities to connect and enjoy time together: annual seminar, team meals, group activities, sports and more
  • A modern and pleasant working environment designed to encourage collaboration
  • Meal vouchers

Finally, joining Cailabs means benefiting from an environment committed to supporting you in developing new skills.

More information: www.cailabs.com

Réf: d7869fb3-b45e-4e6b-9f6e-5f7a829b5c45

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Numerical Simulation of an Optoelectronic System for Satellite-to-Ground Optical Communications F/H

Internship - 6 months
Full time
Rennes

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