Publications related to Backscatter

Raman tensor of zinc-phosphide (Zn3P2): from polarization measurements to simulation of Raman spectra

Anna Fontcuberta i Morral, Elias Zsolt Stutz, Santhanu Panikar Ramanandan, Mischa Samuel Flór, Jean-Baptiste Leran, Mahdi Zamani, Rajrupa Paul, Mirjana Dimitrievska

Zinc phosphide (Zn3P2) is a II–V compound semiconductor with promising photovoltaic and thermoelectric applications. Its complex structure is susceptible to facile defect formation, which plays a key role in further optimization of the material. Raman spec ...

2021

How Forward-Scattering Snow and Terrain Change the Alpine Radiation Balance With Application to Solar Panels

Michael Lehning, Annelen Kahl

Rough terrain in mid- and high latitudes is often covered with highly reflective snow, giving rise to a very complex transfer of incident sunlight. In order to simplify the radiative transfer in weather and climate models, snow is generally treated as an i ...

AMER GEOPHYSICAL UNION2021

Distributed optomechanical fiber sensing based on serrodyne analysis

Luc Thévenaz, Zhisheng Yang, Simon Adrien Zaslawski

Distributed measurement of forward stimulated Brillouin scattering (FSBS) attracted substantial attention for its ability to probe media surrounding optical fibers. Currently, all techniques extract the information from the FSBS-induced local energy transf ...

2021

Distributed Temperature Sensing Based on φ-OTDR Using Back-reflection-enhanced Fiber

Luc Thévenaz, Malak Mohamed Hossameldeen Omar Mohamed Galal, Li Zhang, Suneetha Sebastian

Distributed temperature sensing with 10 dB back-reflection-enhanced fiber is performed based on φ-OTDR. While the temperature sensitivity of such fibers is similar to that of standard single-mode fibers, a 3-times higher temperature resolution is observed. ...

Optical Society of America2021

Opto-mechanical cross-talk reduction in air-holes multicore fibers

Luc Thévenaz, Zhisheng Yang, Simon Adrien Zaslawski, Yun Fu

We report on the use of air-holes in multicore fibers to alleviate intercore perturbations induced by forward stimulated Brillouin scattering. Comparisons with conventional multicore fibers show significant improvement in terms of cross-talk reduction. ...

Optical Society of America2020

Disorder‐Induced Signal Filtering with Topological Metamaterials

Romain Christophe Rémy Fleury, Farzad Zangeneh Nejad

Disorder, ubiquitously present in realistic structures, is generally thought to disturb the performance of analog wave devices, as it often causes strong multiple scattering effects that largely arrest wave transportation. Contrary to this general view, he ...

2020

Multiphase magnetism in Yb2Ti2O7

Gregory Scott Tucker

We use neutron scattering to show that ferromagnetism and antiferromagnetism coexist in the low T state of the pyrochlore quantum magnet Yb2Ti2O7. While magnetic Bragg peaks evidence long-range static ferromagnetic order, inelastic scattering shows that sh ...

NATL ACAD SCIENCES2020

Distributed and dynamic strain sensing with high spatial resolution and large measurable strain range

Luc Thévenaz, Malak Mohamed Hossameldeen Omar Mohamed Galal, Zhisheng Yang, Li Zhang

A distributed and dynamic strain sensing system based on frequency-scanning phase-sensitive optical time domain reflectometry is proposed and demonstrated. By utilizing an RF pulse scheme with a fast arbitrary waveform generator, a train of optical pulses ...

2020

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Backscatter

Spin waves in the collinear antiferromagnetic phase of Mn5Si3

Raman tensor of zinc-phosphide (Zn3P2): from polarization measurements to simulation of Raman spectra

How Forward-Scattering Snow and Terrain Change the Alpine Radiation Balance With Application to Solar Panels

Distributed optomechanical fiber sensing based on serrodyne analysis

Advanced methods for Brillouin based distributed optical fiber sensors

Distributed Temperature Sensing Based on φ-OTDR Using Back-reflection-enhanced Fiber

Opto-mechanical cross-talk reduction in air-holes multicore fibers

Disorder‐Induced Signal Filtering with Topological Metamaterials

Multiphase magnetism in Yb2Ti2O7

Distributed and dynamic strain sensing with high spatial resolution and large measurable strain range

Graph Chatbot

Chat with Graph Search

Distributed optomechanical fiber sensing based on serrodyne analysis

Advanced methods for Brillouin based distributed optical fiber sensors

Spin waves in the collinear antiferromagnetic phase of Mn5Si3

Raman tensor of zinc-phosphide (Zn3P2): from polarization measurements to simulation of Raman spectra

How Forward-Scattering Snow and Terrain Change the Alpine Radiation Balance With Application to Solar Panels

Opto-mechanical cross-talk reduction in air-holes multicore fibers

Multiphase magnetism in Yb2Ti2O7

Distributed and dynamic strain sensing with high spatial resolution and large measurable strain range

Distributed Temperature Sensing Based on φ-OTDR Using Back-reflection-enhanced Fiber

Disorder‐Induced Signal Filtering with Topological Metamaterials