Joint Labs

The OASIS team is involved in 3 joint laboratories involving other LAAS research teams and companies

OPALE - Essilor

LICUR - CEA

SEMA - NXP, LAPLACE

ANR Research Projects

ANR FRAME:

The ANR FRAME project aims to deliver a new concept in dissolved CH4 sensing based on optical fibers for aquatic environments (e.g. estuaries, coastal and offshore oligotrophic seawaters) in the context of mitigating climate change (CC). FRAME will develop robust high precision, high dynamic range in situ fiber refractometers with interchangeable probes integrating different fiber technologies for detecting and monitoring long-term emissions of aquatic CH4 with high spatial and temporal resolution. This should provide more accurate estimation and, hence, data-based analysis of the global CH4 budget and its biogeochemical cycle. Multimode fibers will be designed with very high resolution and sensitivity for the relatively narrow refractive index (RI) range (Zone 2) to detect low to average CH4 concentrations (~10 nmol/L to 2000 nmol/L). Novelty ring photonic crystal fibers (PCFs) with high sensitivity (>10-fold increase compared to MMFs) from 1.31 – 1.43 RI unit (RIU) also known as Zone 1 operating region, will be designed for trace CH4 concentration up to ~10 nmol/L. This innovative sensor design renders the probe adaptable to other biochemical species and is expected to open potential pathways to develop dense in situ aquatic sensors and networks to quantify other dissolved gas species.

More information on: coming soon

ANR XSTRAIN:

The ANR XSTRAIN project is a sensor development project targeting the field of novelty opto-geophysics instrumentation to detect and monitor of slow silent slips that can potentially nucleate large earthquakes. Understanding these difficult to detect events will significantly contribute to better understand the physics of earthquake. XSTRAIN will develop a high precision multi-axis optical strainmeter with resolution of at least 10-10 – 10-8 (corresponding to 0.1 – 10 nstrain) based on extrinsic fiber Fabry-Perot interferometer previously develop in the laboratory. Interferometric probes derived from the same laser source are coupled to compliant mechanical amplifiers (CMAs) to enable the full 6 components of the strain tensor to be measured simultaneously. These CMA probes are integrated into a purpose-built strain device that will be installed in boreholes from 40 – 200 m deep. One prototype strainmeter has recently been installed in the OREME geophysics observatory in the Larzac region for field trials. Potential pathways from the project outputs include novelty opto-geophysics instrument development for autonomous dense sensor deployment, long term in situ remote observation devices and integration in numerous national or international risk monitoring networks.

More information on: coming soon

ANR PICSONDE (2020 - 2025):

The ANR PICSONDE project targets the field of non-destructive testing instrumentation. The main application is real-time experimental modal analysis applied to predictive maintenance applications over a large bandwidth (> 10 kHz) in particular. This project consists in designing and fabricating an embedded sensing system based on optical feedback interferometry (OFI) in a laser diode, thus integrating the light source, the interferometer, and the photodetector within the same package. This proposed OFI-based sensor combines a photonic integrated circuit (PIC) that allows to retrieve the frequency modulated (FM) channel of the OFI signal, with a system-on-chip (SoC) for both data acquisition and signal processing. The sensor resolution targets the OFI quantum limited performance of 0.1 pm/√Hz noise power spectrum density. This compact high-resolution interferometric sensor can also be used to measure refractive index variations that correspond to optical path changes. Additionally, the sensor can, via the PIC, potentially be exploited to optically probe MEMS structures. This opens a pathway to develop high-resolution (bio)chemical refractometric sensors and optically integrated MEMs sensors.

More information on : https://www.laas.fr/projects/ANR_PICSONDE/

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