Researcher in Photonic Structures on Glass at Cryogenic Temperatures - CROMA

Grenoble INP - Institute of Engineering; France; On-site; EUR 28,000 - 39,000; Part time

Job summary

Grenoble INP - Institute of Engineering invites applications for a First Stage Researcher (Postdoc) in Electronic Engineering. The project focuses on evaluating fiber optic connectors on cryostats, under cryogenic conditions, and at partner facilities (CEA-Leti).

The role includes designing and performing optical tests, measuring losses versus temperature from ambient to 4 K, and studying stability under repeated cooling, plus exploring complex optical functions such as spirals and Mach-Zehnder

Qualifications

• PhD or equivalent in Electronic Engineering or related field.
• Strong knowledge of integrated photonics.
• Experience with cleanroom fabrication or cryogenics.

Responsibilities

• Test and optimize the performance of a connection between optical fibers and a glass waveguide at cryogenic temperatures (around 4K) in a laboratory cryostat.
• Measure the evolution of optical losses in the fiber-optic component as a function of temperature (from ambient to 4K).
• Study the stability of the fiber-optic component under repeated cooling cycles.
• Study the behavior of more complex optical functions as a function of temperature (e.g., spirals, Mach-Zehnder interferometers, phasars...).

Skills

Integrated photonics

Cryogenics

Cleanroom fabrication

Education

PhD or equivalent

Job description

Organisation/Company Grenoble INP - Institute of Engineering Department Engineering Research Field Engineering Electronic engineering Researcher Profile First Stage Researcher (R1) Positions Postdoc Positions Application Deadline 13 Nov 2026 - 20:00 (Europe/Paris) Country France Type of Contract Temporary Job Status Full-time Offer Starting Date 16 Nov 2026 Is the job funded through the EU Research Framework Programme? Not funded by a EU programme Is the Job related to staff position within a Research Infrastructure? No

Offer Description

Key objective:

To evaluate the new fiber optic connectors installed on one of the cryostats at the laboratory and at the project partners’ facilities (CEA-Leti)

Main assignments:

- Test and optimize the performance of a connection between optical fibers and a glass waveguide at cryogenic temperatures (around 4K) in a laboratory cryostat
- Measure the evolution of optical losses in the fiber-optic component as a function of temperature (from ambient to 4K)
- Study the stability of the fiber-optic component under repeated cooling cycles
- Study the behavior of more complex optical functions as a function of temperature (e.g., spirals, Mach-Zehnder interferometers, phasars...)

Requirements

Research Field Engineering Electronic engineering Education Level PhD or equivalent

Skills/Qualifications

• strong knowledge of integrated photonics
• experience in cleanroom fabrication or cryogenics