Results 41 to 50 of about 132,674 (264)
Recording of the Multiplexed Bragg Diffraction Gratings for Waveguides Using Phase Mask
Photonics, 2020 The paper describes a stable method for multiplexed recording of the Bragg diffraction gratings for waveguides using a phase mask. Diffraction waveguides in this experiment were made of photo-thermo-refractive glass.
Maria Shishova +3 more
doaj +1 more source
Efficient large-scale multiplexing of fiber Bragg grating and fiber Fabry-Perot sensors for structural health monitoring applications [PDF]
, 2006 Fiber Bragg gratings have been demonstrated as a versatile sensor for structural health monitoring. We present an efficient and cost effective multiplexing method for fiber Bragg grating and fiber Fabry-Perot sensors based on a broadband mode-locked ...
Kirkendall, C. K. +2 more
core +4 more sources
Inscription methods for co‐located fibre Bragg gratings using small spot direct UV writing
Electronics Letters, 2021 Two methods to inscribe co‐located fibre Bragg gratings using the small spot direct UV writing technique are described and compared, namely: superimposed gratings, which are written one over the other at the same spatial location, and superstructured ...
S. L. Jantzen +6 more
doaj +1 more source
Graphene Bragg gratings on microfiber
Optics Express, 2014 Graphene Bragg gratings (GBGs) on microfiber are proposed and investigated in this paper. Numerical analysis and simulated results show that the mode distribution, transmission loss, and central wavelength of the GBG are controllable by changing the diameter of the microfiber or the refractive index of graphene.
B C, Yao +9 more
openaire +2 more sources
Rapidly reconfigurable optical phase encoder-decoders based on fiber Bragg gratings [PDF]
, 2006 We demonstrate the capacity for fast dynamic reconfiguration of optical code-division multiple access (OCDMA) phase en/decoders based on fiber Bragg gratings and a thermal phase-tuning technique.
Mokhtar, M.R. +5 more
core +1 more source
Bragg gratings inscription in weakly-doped fibers
Results in Physics, 2019 The results of an investigation of the Bragg gratings inscription processes in weakly-doped fibers with different dopants without preliminary hydrogen-loading are presented in this work.
Oleg V. Butov
doaj +1 more source
Nonreciprocal waveguide Bragg gratings
Optics Express, 2005 The use of a complex short-period (Bragg) grating which combines matched periodic modulations of refractive index and loss/gain allows asymmetrical mode coupling within a contra-directional waveguide coupler. Such a complex Bragg grating exhibits a different behavior (e.g.
Mykola, Kulishov +4 more
openaire +2 more sources
A simple and wavelength-flexible procedure for fabricating phase-shifted fibre Bragg gratings [PDF]
, 2010 A simple procedure for fabricating phase-shifted fibre Bragg gratings (PSFBGs) that does not require the use of a phase-shifted phase mask is presented.
Tatam, Ralph P. +5 more
core +1 more source
Ionic Gating of Liquid‐Crystal‐Like Pteridine Assemblies Enables Tunable Light Scattering
Advanced Materials, EarlyView.Tunable optical properties emerge through developmentally regulated ionic gating, which transforms disordered, ultraviolet (UV)‐absorbing organelles into concentrically ordered, liquid‐crystal‐like light scatterers. By integrating analyses of pteridine composition, potassium‐dependent assembly, hierarchical ultrastructure, and optical behavior, the ...
Sourabh Bera +22 more
wiley +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. +4 more
openaire +2 more sources