Results 31 to 40 of about 9,843 (297)

An impact-insensitive fiber optic current transformer based on polarization maintaining photonic crystal fiber delay coil

open access: yesFrontiers in Physics, 2023
When the polarization-maintaining fiber (PMF) delay coil of a fiber optic current transformer (FOCT) is impacted, external forces on the optical fibers and change of their birefringence may lead to extra phase errors during the propagation of optical ...
Hongze Gao   +7 more
doaj   +1 more source

Imaging polarimetry for the determination of stress constraint in transparent solids

open access: yesEPJ Web of Conferences, 2010
Using a Mueller matrix polarimeter based on liquid crystal cells [1] and the forward polar decomposition [2], we study the evolution of the birefringence property induced by an increasing compression of a Plexiglas sample.
De Martino A., Orlik X., Richert M.
doaj   +1 more source

Optical imaging of antiferromagnetic domains in ultrathin CoO(001) films

open access: yesNew Journal of Physics, 2020
Antiferromagnetic (AFM) domains in ultrathin CoO(001) films are imaged by a wide-field optical microscopy using magneto-optical birefringence effect.
Jia Xu   +5 more
doaj   +1 more source

Fast and direct measurement of the linear birefringence profile in standard single-mode optical fibers [PDF]

open access: yes, 2020
Phase birefringence in optical fibers typically fluctuates over their length due to geometrical imperfections induced from the drawing process or during installation. Currently commercially available fibers exhibit remarkably low birefringence, prompting
Costa L.   +6 more
core   +2 more sources

Long-Time Relaxation of Stress-Induced Birefringence of Microcrystalline Alkali Halide Crystals

open access: yesMolecules, 2018
Alkali halide single crystals are most commonly used as the diluent matrix in the tablet method or disk technique for spectroscopic measurements. However, stress-induced birefringence (SIB) of alkali halides as well as intrinsic birefringence manifest ...
Hiroki Ueno   +8 more
doaj   +1 more source

Recent Progress in Distributed Brillouin Sensors Based on Few-Mode Optical Fibers

open access: yesSensors, 2021
Brillouin scattering is a dominant inelastic scattering observed in optical fibers, where the energy and momentum transfer between photons and acoustic phonons takes place.
Yong Hyun Kim, Kwang Yong Song
doaj   +1 more source

Spontaneous birefringence in boracites-measurements and applications

open access: yesFerroelectrics, 1978
The techniques and results of measurements of the spontaneous birefringence versus temperature are discussed for the fully ferroelectric/fully ferroelastic phases of Mg-Cl, Cr-Cl, Mn-Cl, Mn-Br, Mn-I, Fe-Cl, Fe-Br, Fe-I, Co-Cl, Co-Br. Co-I, Ni-Cl, Ni-Br, Cu-Cl, Cu-Br, Zn-Cl, Zn-Br, Zn-I, Cd-Cl, Cd-Br and Cd-I boracites.
Schmid, Hans, Tippmann, Heinz
openaire   +3 more sources

Coating Artificial Spider Silk Fiber with Magnetic FeCo: An Effective Strategy for Creating a Flexible Magneto‐Responsive Material

open access: yesAdvanced Functional Materials, EarlyView.
An original method is presented for producing artificial spider silk fibers with magnetic and magnetomechanical responsiveness, which consists in coating them with a nanometer‐thick layer of FeCo alloy by sputtering deposition. The challenge of combining organic materials and inorganic magnetic nanostructures is addressed, thus taking a step forward ...
Filippo Lanaro   +5 more
wiley   +1 more source

Measurement of plasma current in Tokamaks using an optical fibre reflectometry technique

open access: yesEPJ Web of Conferences, 2018
An optical time-domain reflectometer sensitive to the polarization of light is proposed for the measurement of plasma current in the Tore Supra fusion reactor. The measurement principle relies on the Faraday effect i.e.
Wuilpart Marc   +4 more
doaj   +1 more source

3D Printing Innovations in Polymeric Porous and Patterned Architecture

open access: yesAdvanced Functional Materials, EarlyView.
Polymeric foams occupy a unique structural space between dense solids and open networks, where engineered void fraction governs mechanical compliance, thermal resistance, and mass transport. Additive manufacturing now enables precise spatial control over cellular architecture, unlocking designer foam structures across applications spanning crash ...
Dhanush Patil   +13 more
wiley   +1 more source

Home - About - Disclaimer - Privacy