Concept

Double-clad fiber

Related publications (246)

A tunable femtosecond fiber laser source for multiphoton emission microscopy

Second harmonic generation microscopy is used to image interfaces or non-centrosymmetric structures and molecules. Two-photon fluorescence microscopy can image molecules within cells without using markers. Thus those technics have lead to advances in our u ...

EPFL2021

Giant Brillouin Amplification in Gas Using Hollow-core Fiber

Luc Thévenaz, Flavien Gyger

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 America2021

Modulating the properties of DNA-SWCNT sensors using chemically modified DNA

Ardemis Anoush Boghossian, Benjamin Paul Johanès Gabriel Lambert, Alice Judith Gillen, Alessandra Antonucci, Daniel Molina Romero

Properties of SWCNT-based sensors such as brightness and detection capabilities strongly depend on the characteristics of the wrapping used to suspend the nanotubes. In this study, we explore ways to modify the properties of DNA-SWCNT sensors by us- ing ch ...

2021

Review of hybrid composites fatigue

Anastasios Vassilopoulos, Dharun Vadugappatty Srinivasan

Hybrid composites become popular and are today used in a large number of contemporary structural applications. When compared to non-hybrid composites, hybridization offers additional benefits since the mixing of cheaper, low-quality fibers, with more expen ...

2021

Impact of optical noises on unipolar-coded Brillouin optical time-domain analyzers

Luc Thévenaz, Marcelo Alfonso Soto Hernandez, Zhisheng Yang, Sheng Wang, Jian Wu

Noise models for both single-pulse and coded Brillouin optical time-domain analyzers (BOTDA) are established to quantify the actual signal-to-noise ratio (SNR) enhancement provided by pulse coding at any fiber position and in any operating condition. Simul ...

2021

Giant Brillouin amplification in gas using hollow-core waveguides

Luc Thévenaz, Flavien Gyger

We report a strong Brillouin amplification in gas using hollow-core fibers, exceeding by 6 times the gain in solid silica fibers. A novel fiber laser using Brillouin lasing in gas has been demonstrated. ...

Optical Society of America2020

Frequency scanned phase sensitive optical time-domain reflectometry interrogation in multimode optical fibers

Luc Thévenaz, Alejandro Dominguez Lopez

Standard multimode optical fibers normally support transmission over some 100 modes. Large differences in the propagation constant and the spatial distribution of distinct modes degrade the performance of phase-sensitive optical time-domain reflectometry m ...

AIP2020

Controlling spatiotemporal nonlinearities in multimode fibers with deep neural networks

Demetri Psaltis, Navid Borhani, Eirini Kakkava, Babak Rahmani, Ugur Tegin

Spatiotemporal nonlinear interactions in multimode fibers are of interest for beam shaping and frequency conversion by exploiting the nonlinear interaction of different pump modes from quasi-continuous wave to ultrashort pulses centered around visible to i ...

2020

Wavefront shaping and deep learning in fiber endoscopy

Eirini Kakkava

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. ...

EPFL2020

Thermally drawn advanced functional fibers: New frontier of flexible electronics

Fabien Sorin, Wei Yan, Andreas Leber, Chaoqun Dong, Min Chen, Shan Jiang, Wenxin Xu

Electronic devices are evolving from rigid devices into flexible and stretchable structures, enabling a seamless integration of electronics into our everyday lives. The integration of a variety of electronic materials within thermal-drawn fibers has emerge ...

2020

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