Publications associées à Porteuse

Bipolar optical pulse coding for performance enhancement in BOTDA sensors

Luc Thévenaz, Marcelo Alfonso Soto Hernandez

A pump signal based on bipolar pulse coding and single-sideband suppressed-carried (SSB-SC) modulation is proposed for Brillouin optical time-domain analysis (BOTDA) sensors. Making a sequential use of the Brillouin gain and loss spectra, the technique is ...

Optical Society of America2013

Evolution of magnetic and crystal structures in the multiferroic FeTe2O5Br

Helmuth Berger

Neutron diffraction and nuclear quadrupole resonance (NQR) measurements were employed to investigate magnetic order in the nonferroelectric phase preceding the low-temperature multiferroic state in FeTe2O5Br. Refinement of the neutron diffraction data and ...

American Physical Society2013

Broadband excitation in solid-state NMR using interleaved DANTE pulse trains with N pulses per rotor period

Geoffrey Bodenhausen, Diego Carnevale, Simone Ulzega

We analyze the direct excitation of wide one-dimensional spectra of nuclei with spin I = 1/2 or 1 in rotating solids submitted to pulse trains in the manner of Delays Alternating with Nutations for Tailored Excitation (DANTE), either with one short rotor-s ...

Elsevier2013

Spatial Degrees of Freedom of Large Distributed MIMO Systems and Wireless Ad Hoc Networks

Olivier Lévêque

We consider a large distributed MIMO system where wireless users with single transmit and receive antenna cooperate in clusters to form distributed transmit and receive antenna arrays. We characterize how the capacity of the distributed MIMO transmission s ...

Institute of Electrical and Electronics Engineers2013

Prediction of Multipactor Breakdown for Multicarrier Applications: The Quasi-Stationary Method

Michael Mattes

A new prediction algorithm for multipactor breakdown determination in multicarrier signals is presented. This new algorithm assumes a quasi-stationary (QS) model based on the nonstationary theory for single-carrier signals. It determines the worst case, i. ...

Institute of Electrical and Electronics Engineers2012

Single-shot, simultaneous incoherent and holographic microscopy

Christian Depeursinge, Nicolas Pavillon, Etienne Shaffer

In this work, we demonstrate single-shot, simultaneous recording and subsequent retrieval of one incoherent and two holographic (intensity and phase) images from the same camera frame. Demultiplexing of incoherent and holographic signals in the spatial fre ...

Wiley-Blackwell2012

Localized and stationary dynamic gratings via stimulated Brillouin scattering with phase modulated pumps

Luc Thévenaz, Nikolay Primerov

A novel technique for the localization of stimulated Brillouin scattering (SBS) interaction is proposed, analyzed and demonstrated experimentally. The method relies on the phase modulation of two counter-propagating optical waves by a common pseudo-random ...

Optical Society of America2012

Bipolar pulse coding for enhanced performance in Brillouin distributed optical fiber sensors

Luc Thévenaz, Marcelo Alfonso Soto Hernandez

We propose and experimentally demonstrate the possibility to use a pump signal based on bipolar pulse sequences using single-sideband suppressed-carrier (SSB-SC) modulation in Brillouin optical time-domain analysis (BOTDA) sensors. The SSB-SC modulated pum ...

Spie-Int Soc Optical Engineering2012

Random-access distributed fiber sensing

Luc Thévenaz, Nikolay Primerov, Andrey Denisov

Optical sensing offers an attractive solution to the societal concern for prevention of natural and human-generated threats and for efficient use of natural resources. The unprecedented properties of optical fibers make them ideal for implementing a ‘nervo ...

Wiley-VCH Verlag Berlin2012

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Porteuse

Bipolar optical pulse coding for performance enhancement in BOTDA sensors

Evolution of magnetic and crystal structures in the multiferroic FeTe2O5Br

Broadband excitation in solid-state NMR using interleaved DANTE pulse trains with N pulses per rotor period

Spatial Degrees of Freedom of Large Distributed MIMO Systems and Wireless Ad Hoc Networks

Prediction of Multipactor Breakdown for Multicarrier Applications: The Quasi-Stationary Method

Single-shot, simultaneous incoherent and holographic microscopy

Localized and stationary dynamic gratings via stimulated Brillouin scattering with phase modulated pumps

Bipolar pulse coding for enhanced performance in Brillouin distributed optical fiber sensors

Random-access distributed fiber sensing

Slow light fiber systems in microwave photonics

Graph Chatbot

Chattez avec Graph Search

Bipolar pulse coding for enhanced performance in Brillouin distributed optical fiber sensors

Single-shot, simultaneous incoherent and holographic microscopy

Prediction of Multipactor Breakdown for Multicarrier Applications: The Quasi-Stationary Method

Spatial Degrees of Freedom of Large Distributed MIMO Systems and Wireless Ad Hoc Networks

Broadband excitation in solid-state NMR using interleaved DANTE pulse trains with N pulses per rotor period

Evolution of magnetic and crystal structures in the multiferroic FeTe2O5Br

Bipolar optical pulse coding for performance enhancement in BOTDA sensors

Localized and stationary dynamic gratings via stimulated Brillouin scattering with phase modulated pumps

Random-access distributed fiber sensing

Slow light fiber systems in microwave photonics