Publication
Temperature-strain discrimination in distributed optical fiber sensing using phase-sensitive optical time-domain reflectometry
Publications associées (38)
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Piscataway2024Investigating Novel Optical Fibres for More Advanced Distributed Optical Fibre Sensing
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EPFL2022Giant Brillouin Amplification in Gas Using Hollow-core Fiber
Optical amplification in hollow core fibers has been achieved using stimulated Brillouin scattering directly in the gaseous medium. More than 50 dB optical gain is observed over 50 m of fiber using 200 mW of pump power. ...
Optical Society of America2021Wavefront shaping and deep learning in fiber endoscopy
Fiber endoscopy plays an important role in the clinical diagnosis and treatment processes involved in modern medicine. Thin fiber probes can relay information from confined places in the human body that are inaccessible for conventional bulky microscopes. ...
EPFL2020Impact 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 ...
2018Distributed hydrogen monitoring with phase-sensitive optical time-domain reflectometry
We propose a distributed hydrogen sensing system based on ϕ-OTDR and a novel coating configuration with fiber adhesively bonding to palladium foils. An ultra-high sensitivedistributed hydrogen sensing with 5 cm spatial resolution is demonstrated ...
Optical Society of America2018Microstructure 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. ...
EPFL2017Temperature sensitivity enhancement in a standard optical fiber with double coatings at low temperature
Luc Thévenaz, Marcelo Alfonso Soto Hernandez, Xin Lu
The thermomechanical behavior of a standard optical fiber with double coating is theoretically analyzed at room temperature and ~ 220 K. As the primary coating becomes stiffer at low temperature, the impact of the thermal expansion of the coatings is no lo ...
Ieee2017Demonstration of distributed shape sensing based on Brillouin scattering in multi-core fibers
Luc Thévenaz, Marcelo Alfonso Soto Hernandez, Zhiyong Zhao
In this paper we demonstrate distributed shape sensing based on stimulated Brillouin scattering in a multi-core fiber (MCF). Brillouin optical time-domain analysis with differential pulse-width pairs is implemented to measure the local tangential strain-in ...
Ieee2017Distributed photothermal measurements of gas presence along holey optical fibers
Chirped-pulse phase-sensitive optical time domain reflectometry has shown a remarkable performance when applied to dynamic measurements of strain and temperature, recently reaching ranges of several kilometers while interrogating the fiber at acoustic freq ...
SPIE2017