Results 21 to 30 of about 7,840 (209)

Topologically protected vector edge states and polarization beam splitter by all-dielectric valley photonic crystal slabs

open access: yesNew Journal of Physics, 2021
The polarization beam splitter (PBS) is the essential optical component, which is widely used in various optical instruments. Its robustness against perturbation is very necessary to all-optical classical and quantum networks.
Lu He   +4 more
doaj   +1 more source

All-Optical Bistability in Photonic Crystal Slabs with Coupled Cavity-waveguide Structure [PDF]

open access: yesفیزیک کاربردی ایران, 2021
In this study, we consider a photonic crystal slab with a triangular lattice, which consists of air holes with a circular shape in a tellurium background on top of a Teflon substrate.
Taymaz Fathollahi-khalkhali
doaj   +1 more source

Effects of hydrostatic pressure on the photonic band structure and quality factor of an L3 cavity in a photonic crystal slab

open access: yesResults in Physics, 2020
In this work, we investigate the effects of hydrostatic pressure on the photonic band structure and quality factor of the fundamental mode in an L3 cavity using the guided-mode expansion method in two-dimensional photonic crystal slabs.
Francis Segovia-Chaves   +1 more
doaj   +1 more source

Pressure Sensing of Symmetric Defect Photonic Crystals Composed of Superconductor and Semiconductor in Low-Temperature Environment

open access: yesCrystals, 2023
We theoretically investigate the defect mode transmittance of light waves in superconductor–semiconductor photonic crystals and its pressure-sensing dependence.
Haiyang Hu   +5 more
doaj   +1 more source

A Novel Method for Band Structure Analysis of Photonic Crystal Slabs

open access: yesIEEE Photonics Journal, 2011
We propose a new method to extract the modes of photonic crystal slabs and, thus, obtain their band structures. These slabs, which are 2-D periodic structures with finite thickness, can completely confine light and have the important advantage of simple ...
S. A. H. Nekuee, M. Akbari, K. Mehrany
doaj   +1 more source

Numerical simulation of a novel bilayer photonic crystal slab biosensor with hexagonal lattice

open access: yesResults in Physics, 2019
A new type of silicon-based bilayer photonic crystal slab biosensor is proposed based on the theoretical investigation of various parameters of two-dimensional photonic crystal slab on the peak wavelength and characteristics of the reflection spectrum ...
Daohan Ge   +4 more
doaj   +1 more source

Quantum dot photonic crystal lasers [PDF]

open access: yes, 2002
Coupled cavity designs on two-dimensional square lattice photonic crystal slabs were used to demonstrate optically pumped indium arsenide quantum dot photonic crystal lasers at room temperature.
Chen, H.   +4 more
core   +1 more source

Waveguides, bends and Y-junctions with improved transmission and bandwidth in hexagon-type SOI photonic crystal slabs [PDF]

open access: yes, 2005
This paper presents novel ways of implementing waveguide components in photonic crystal slabs based on silicon-on-insulator (SOI). The integration platform we consider consists of hexa¬gonal holes arranged in a triangular lattice (‘hexagon-type’ photonic
Bostan, Cazimir G.   +3 more
core   +2 more sources

Simultaneous Guidance of Surface Acoustic and Surface Optical Waves in Phoxonic Crystal Slabs

open access: yesCrystals, 2017
Phoxonic crystals, which exhibit simultaneous phononic and photonic bandgaps, are promising artificial materials for optomechanical and acousto-optical devices.
Tian-Xue Ma   +2 more
doaj   +1 more source

Measuring Photonics in Photosynthesis: Combined Micro-Fourier Image Spectroscopy and Pulse Amplitude Modulated Chlorophyll Fluorimetry at the Micrometre-Scale

open access: yesBiomimetics, 2022
Natural photonic structures are common across the biological kingdoms, serving a diversity of functionalities. The study of implications of photonic structures in plants and other phototrophic organisms is still hampered by missing methodologies for ...
William P. Wardley   +2 more
doaj   +1 more source

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