Results 41 to 50 of about 14,380 (286)

Numerical Analysis of Thermal Dependence of the Spectral Response of Polymer Optical Fiber Bragg Gratings [PDF]

Iraqi Journal for Electrical and Electronic Engineering, 2016
The thermal dependence of the spectral response (i.e. transmission, reflection and time delay (
r) responses) of uniform polymer optical fiber (POF) Bragg gratings has been investigated. In addition to the temperature dependence, the effects of grating
Hisham K. Hisham
doaj  

In-Fiber Thermally Diffused Coupler and Fiber Bragg Grating Inscribed in Twin-Core Fiber for Sensitivity-Enhanced Vector Bending Sensing

Photonic Sensors, 2023
A vector bending fiber sensor based on core-by-core inscribed fiber Bragg gratings in a twin-core fiber has been proposed and experimentally demonstrated.
Lingzhi Meng, Hongye Wang, Qi Xia, Tingting Yuan, Xiaotong Zhang, Libo Yuan   +5 more
doaj   +1 more source

Perimeter System Based on a Combination of a Mach-Zehnder Interferometer and the Bragg Gratings

Advances in Electrical and Electronic Engineering, 2016
Fiber optic interferometers and Bragg gratings belong to the group of very precise and sensitive devicesthat allow measuring very small deformation, temperature or vibration changes.
Marcel Fajkus, Jan Nedoma, Petr Siska, Lukas Bednarek, Stanislav Zabka, Vladimir Vasinek   +5 more
doaj   +1 more source

Exciton-polaritons in Bragg gratings

Journal of Physics: Conference Series, 2010
We study the strong coupling between photons and bulk excitons in a one-dimensional Bragg grating. The dispersion of the resulting Bragg-polariton states resembles the dispersion of quantum-well microcavity polaritons. We report on a parametric scattering process at two "magic frequencies" occurring due to the strong excitonic nonlinearity.
Biancalana, F., Mouchliadis, L., Creatore, C., Osborne, S., Langbein, W.   +4 more
openaire   +2 more sources

Nonlinear Magneto-Optical Bragg Gratings

Physical Review Letters, 2006
In magneto-optical gratings the magnetic dipolar coupling superimposed on the electric dipolar one introduces nonreciprocity and spectral discrimination between circular polarization states, measured by a Zeeman-like splitting of the photonic Bragg resonances.
Jonsson, Fredrik, Flytzanis, Christos
openaire   +5 more sources

Laser-frequency locking techniques for high-sensitivity strain measurements by high-birefringence fiber Bragg gratings and resonators [PDF]

, 2007
A new approach to simultaneously interrogate orthogonal axes of single Fiber- Bragg-Gratings (FBGs) and FBG-FabryPerot resonator sensors fabricated in linearly highly birefringent (HiBi) fibre is presented.
Ferraro, P., Salza, M., R. Tatam, P. De Natale, Gagliardi, G., A. Di Maio, P. Ferraro, E. Chehura, M. Salza, De Natale, P., Tatam, Ralph P., Di Maio, A., Chehura, Edmon, G. Gagliardi   +13 more
core   +1 more source

Mixed‐Metal Promotion in a Manganese‐Molybdenum Oxynitride as Catalyst to Integrate C─C and C─N Coupling Reactions for the Direct Synthesis of Acetonitrile from Syngas and Ammonia

Advanced Materials, EarlyView.
Transition metal oxy/carbo‐nitrides show great promise as catalysts for sustainable processes. A Mn‐Mo mixed‐metal oxynitride attains remarkable performance for the direct synthesis of acetonitrile, an important commodity chemical, via sequential C─N and C─C coupling from syngas (C1) and ammonia (N1) feedstocks.
M. Elena Martínez‐Monje, Wilson Henao, Tania Rodenas, Patricia Concepción, Virginia Pérez Dieste, Alexander Missyul, Giovanni Agostini, Gonzalo Prieto   +7 more
wiley   +1 more source

Opportunities of Semiconducting Oxide Nanostructures as Advanced Luminescent Materials in Photonics

Advanced Materials, EarlyView.
The review discusses the challenges of wide and ultrawide bandgap semiconducting oxides as a suitable material platform for photonics. They offer great versatility in terms of tuning microstructure, native defects, doping, anisotropy, and micro‐ and nano‐structuring. The review focuses on their light emission, light‐confinement in optical cavities, and
Ana Cremades, Pedro Hidalgo, David Maestre, Ruth Martínez‐Casado, Emilio Nogales, Beatriz Rodríguez, G. Cristian Vásquez, Bianchi Méndez   +7 more
wiley   +1 more source

Etched Polymer Fibre Bragg Gratings and Their Biomedical Sensing Applications

Sensors, 2017
Bragg gratings in etched polymer fibres and their unique properties and characteristics are discussed in this paper. Due to the change in material and mechanical properties of the polymer fibre through etching, Bragg gratings inscribed in such fibres ...
Ginu Rajan, Kishore Bhowmik, Jiangtao Xi, Gang-Ding Peng   +3 more
doaj   +1 more source

TILTED FIBER BRAGG GRATING SENSORS FOR REFRACTIVE INDEX MEASUREMENTS OF LIQUID SOLUTIONS

Informatyka, Automatyka, Pomiary w Gospodarce i Ochronie Środowiska, 2022
This publication presents the basic assumptions about the light guiding mechanisms in tilted fiber Bragg gratings, transmission spectra of the fiber with such structures and their sensor properties related to the occurrence of the so-called cladding ...
Damian Harasim
doaj   +1 more source