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Portal > Offres > Offre UMR5270-VIRLAG-004 - H/F Chercheur en photonique pour la mise au point technologique d'une filière optique intégrée SiN

H/F Photonics researcher for the technological development of an integrated SiN optical pathway

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Français - Anglais

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General information

Reference : UMR5270-VIRLAG-004
Date of publication : Wednesday, July 29, 2020
Type of Contract : FTC Scientist
Contract Period : 12 months
Expected date of employment : 1 October 2020
Proportion of work : Full time
Remuneration : 2 675 et 3 084€ Gross Salary/Mois (ACCORDING TO EXPERIENCE)
Desired level of education : 5-year university degree
Experience required : Indifferent


In the framework of the European IPCEI project, in collaboration with ST Microelectronics, the workpackage “Development of new sensors based on Silicon photonics” aims at developing new concepts of optical waveguides to increase the sensitivity of photonic sensors for the realization of gyroscopes or integrated particle detectors dedicated to the automotive market.
ST Microelectronics has developed an industrial platform called DAPHNE on a 300 mm wafer to produce Si or SiN based photonic components for datacom. To address new markets such as the automotive sector, new features need to be developed. It requires hybridization of functional materials or developing process steps that are not available on the DAPHNE platform. The new concepts, coined by the INL, will be realized on the university platform of Nanolyon and then transferred to the DAPHNE platform. The working team at INL is made up of 3 permanents (R. Orobtchouk, P. Rojo Romeo, A. Belarouci) and 2 PhD students. He/she will work under the supervision of Régis Orobtchouk


To ensure the compatibility of the manufacturing processes of the 2 platforms, ST Microelectronics will provide 300 mm silicon wafers with a 2 µm thick layer of silicon optical insulation on which a 0.35 µm thick SiN layer will be deposited. The rest of the technology to obtain the half hetch slot guides will be realized at the INL The low refractive index and SiN layers are initially deposited by PECVD or sputtering. The guides are then defined by laser lithography and ICP engraving. To reduce guide propagation losses, the lithography and engraving steps will be optimized. An erbium-doped alumina layer deposition process will also have to be optimised to produce gain ring resonators to increase the sensitivity of gyroscopes.

Component characterization will require the development of a fiber optic bonding procedure on diffraction array couplers to study rotating gyroscopes.
Clean room training on the various equipment, as well as on the characterization benches, will be provided by the members of the project team.


The candidate should have a pronounced taste for experimental work. A first experiment in the optical characterization of materials (ellipsometry) or integrated optics would be appreciated.

Work Context

The INL has developed research activities in the field of the design and characterization of silicon photonic devices. This activity has been reinforced recently with the creation of 2 joint laboratories with the CEA LETI and ST Microelectronics. He is one of the founding laboratories of the International Mixed University (UMI) with the Sherbrooke University. It has commercial modeling tools (Rsoft, Lumerical) and has made its own software (RCWA, FDFT, mode matching) to design integrated optics components. It has also set up characterization benches by butt coupling or by grating coupler in the range of near-infrared (1.2 to 1.7 µm). Its manufacturing platform Nanolyon has 3 clean rooms with all the equipment for material deposition, lithography and etching suitable for the realization of 1st devices to conduct an exploratory research ranging from the idea to the proof of concept.

Constraints and risks

Researcher with less than 2 years of experience after his thesis. The researcher will have to travel to the 3 sites of the INL.

Additional Information

The deadline for the receipt of CVs is 31 August 2020.

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