Results 111 to 120 of about 35,600 (283)
Integration of a multimode interference coupler with a corrugated sidewall Bragg grating in planar polymer waveguides [PDF]
, 2006 We demonstrate the integration of a 3-dB multimode interference coupler with a corrugated sidewall Bragg grating in planar polymer waveguides by direct electron beam writing.
Huang, Yanyi, Yariv, Amnon, Zhu, Lin
core +1 more source
Liquid Metal‐Based Stretchable Strain Sensor for Fruit Growth Monitoring
Advanced Materials Technologies, EarlyView.Schematic overview of the fruit growth sensor development workflow, including sensor fabrication by injection molding, electromechanical and environmental characterization, mechanical stability testing, electronic readout integration, and outdoor field validation for monitoring of fruit growth under practical orchard conditions.
Asad Ullah +7 more
wiley +1 more source
Brillouin lasing in single-mode tapered optical fiber with inscribed fiber Bragg grating array
Results in Physics, 2018 A tapered optical fiber has been manufactured with an array of fiber Bragg gratings (FBG) inscribed during the drawing process. The total fiber peak reflectivity is 5% and the reflection bandwidth is ∼3.5 nm. A coherent frequency domain reflectometry has
S.M. Popov +12 more
doaj +1 more source
Surface-emitting circular DFB, disk-, and ring-Bragg resonator lasers with chirped gratings. III: gain saturation effects and above-threshold analysis [PDF]
, 2009 As Part III of this series, this paper focuses on an above-threshold modal analysis which includes gain saturation effects in the surface-emitting chirped circular grating lasers. We derive an exact energy relation which states that, in steady state, the
Sun, Xiankai, Yariv, Amnon
core +1 more source
Advanced Materials Technologies, EarlyView.One‐dimensional C4N2H14PbBr4 is shown to have a quasi‐direct electronic band structure and strongly anisotropic transport with polarized broadband emission. A GW/Bethe–Salpeter excited‐state force formalism, supported by polarized Raman and temperature‐dependent photoluminescence, identifies low–frequency Pb–Br phonons that drive ultrafast exciton self‐
Rijan Karkee +7 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
Advanced Optical Materials, EarlyView.Structural color generation is an emerging field for digital display and printing applications. This report presents a novel truncated‐cone design and the first use of GaP sandwiched between two layers of TiO2, demonstrating ultra‐bright, tunable colors with a record color gamut.
Md Rumon Miah +2 more
wiley +1 more source
Photonic realization of the relativistic Dirac oscillator
, 2010 A photonic realization of the Dirac oscillator (DO), i.e. of the relativistic extension of the quantum harmonic oscillator, is proposed for light propagation in fiber Bragg gratings.
Asseh +21 more
core +1 more source
Non-steady-state extremely asymmetrical scattering of waves in periodic gratings [PDF]
, 2002 Extremely asymmetrical scattering (EAS) is a highly resonant type of Bragg scattering with a strong resonant increase of the scattered wave amplitude inside and outside the grating.
Bakhturin +10 more
core +4 more sources
Temperature compensated microfiber Bragg gratings
Optics Express, 2012 In this paper, temperature compensated microfiber Bragg grating (mFBG) is realized by use of a liquid with a negative thermo-optic coefficient. The effects of grating elongation and the index change of silica glass are compensated by refractive index change of the liquid through evanescent-field interaction.
Shuai, Gao +5 more
openaire +2 more sources