Publication
Seepage and settlement monitoring for earth embankment dams using fully distributed sensing along optical fibers
Publications associées (33)
Humidity-insensitive optical fibers for distributed sensing applications
Luc Thévenaz, Tiago Filipe Pimentel Das Neves
Humidity is a critical environmental factor in various applications, and its temperature dependence must be considered when developing thermo-hygrometer fiber sensors. The optical fibers that constitute the sensor must have a temperature reference, which s ...
2023Distributed optical fiber sensing based on frequency-scanned phase-sensitive optical time-domain reflectometry
Unlike traditional sensing schemes which rely on discrete point sensors that perform measurements at predetermined positions, distributed optical fiber sensing is a general technique that enables to continuously gather information (typically temperature an ...
EPFL2020The Navigation of Robotic Fiber Positioners in SDSS-V Project: Design and Implementation
Denis Gillet, Jean-Paul Richard Kneib, Matin Macktoobian
SDSS-V project is one of the major observational cosmological projects which aims to generate the map of the observable universe by collecting spectroscopic data from the sky using optical fibers. Each optical fiber is attached to a robotic positioner to b ...
IEEE2019The Navigation of Robotic Fiber Positioners in SDSS-V Project: Design and Implementation
Jean-Paul Richard Kneib, Matin Macktoobian
SDSS-V project is one of the major observational cosmological projects which aims to generate the map of the observable universe by collecting spectroscopic data from the sky using optical fibers. Each optical fiber is attached to a robotic positioner to b ...
IEEE2019Impact of the fiber coating on the temperature response of distributed optical fiber sensors at cryogenic ranges
Luc Thévenaz, Marcelo Alfonso Soto Hernandez, Xin Lu
The thermomechanical behavior of a standard single mode fiber with different coating materials is theoretically analyzed under different temperature conditions. Results show that the thermal expansion/shrinkage of the fiber coating introduces an extra stra ...
2018Opto-acoustic chemical sensor based on forward stimulated Brillouin scattering in optical fiber
Luc Thévenaz, Desmond Chow Ming Chia
Stimulated Brillouin scattering is well-known for providing distributed measurements in the field of optical fiber sensing. For the conventional backward stimulated Brillouin scattering, the sensing capability is nevertheless limited to temperature and mec ...
IEEE2018Microscopy and digital light shaping through optical fibers
Microscopy is an essential tool in medicine and biomedical research. Traditional microscopes rely on bulky optics, complicating their usage when studying live animal tissues. In addition, light cannot penetrate very far in most biological tissues due to sc ...
EPFL2017Microstructure Engineering in Multi-material Fibers
The integration of conducting and semiconducting architectures within thermally drawn thin and flexible fibers is emerging as a versatile platform for smart sensors and imaging systems, medical and biological probes, energy harvesting and advanced textile. ...
EPFL2017Determination of the radiance of cylindrical light diffusers: design of a one-axis charge-coupled device camera-based goniometer setup
Georges Wagnières, Matthieu Philippe Emmanuel Zellweger, Blaise Lovisa, Andreas Pitzschke, Jenny Bertholet
A one-axis charge-coupled device camera-based goniometer setup was developed to measure the three-dimensional radiance profile ( longitudinal, azimuthal, and polar) of cylindrical light diffusers in air and water. An algorithm was programmed to project the ...
Spie-Soc Photo-Optical Instrumentation Engineers2017Distributed shape sensing using Brillouin scattering in multi-core fibers
Luc Thévenaz, Marcelo Alfonso Soto Hernandez, Zhiyong Zhao
A theoretical and experimental study on the response of Brillouin scattering in multi-core optical fibers (MCF) under different curving conditions is presented. Results demonstrate that the Brillouin frequency shift of the off-center cores in MCF is highly ...
Optical Society of America2016