Results 31 to 40 of about 145,791 (256)
A New Type of Etched Fiber Grating Hydrophone
Photonics, 2022 We propose a new type of fiber hydrophone composed of an etched fiber Bragg grating and a special packaging structure for detecting acoustic waves in the low-frequency band under water.
Wen-Fung Liu +4 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. +4 more
openaire +2 more sources
Modelling of Photonic Wire Bragg Gratings [PDF]
Optical and Quantum Electronics, 2006 Some important properties of photonic wire Bragg grating structures have been investigate. The design, obtained as a generalisation of the full-width gap grating, has been modelled using 3D finite-difference time-domain simulations. Different types of stop-band have been observed.
M. Gnan +4 more
openaire +3 more sources
Energies, 2022 The anchoring quality of bolts is related to roadway safety and the surrounding rock stability. Due to the limitations of conventional monitoring methods in capturing strain, there still exists a gap in the real-time perception of the mechanical ...
Gaochuan Guo +4 more
doaj +1 more source
Simultaneous, independent measurement of temperature and strain using a tilted fibre Bragg grating [PDF]
, 2007 A single fibre Bragg grating is used to discriminate between temperature and strain by exploiting the core-cladding mode coupling of a tilted fibre Bragg grating (TFBG).
Ralph P. Tatam +5 more
core +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
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
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
Rapid characterization of the ultraviolet induced fiber Bragg grating complex coupling coefficient as a function of irradiance and exposure time [PDF]
, 2007 We report the application of optical frequency domain reflectometry and a discrete-layer-peeling inverse scattering algorithm to the spatial characterization of the UV induced complex coupling coefficient during fiber Bragg grating growth.
Kirkendall, Clay K. +2 more
core +4 more sources
Advanced Functional Materials, EarlyView.Solution‐based ligand‐assisted epitaxial growth (LAEG) yields high‐quality CsPbBr3 microcrystals on different substrates with superior morphology, passivated surfaces, and high photoluminescence quantum yield. These robust micro‐resonators achieve record‐low room‐temperature lasing thresholds of 7.2 kW·cm−2 and maintain operational stability up to 90 ...
Shuyu Zhou +19 more
wiley +1 more source