Results 31 to 40 of about 190,886 (342)

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

Recent Progress in Photonic Crystal Devices and Their Applications: A Review

open access: yesPhotonics, 2023
The research field of photonic crystals (PhCs) remains active on a global scale. PhCs, which are periodic optical nanostructures with the characteristics of excellent light field confinement and numerous varying degrees of freedom, provide a solid ...
Rahul Kumar Gangwar   +2 more
doaj   +1 more source

Dynamics simulation of photonic crystal fiber end face polishing

open access: yesAdvances in Mechanical Engineering, 2017
The high quality of polished end face of photonic crystal fiber has a significant effect on coupling efficiency when photonic crystal fiber is used to couple with other optical devices. In order to obtain the smooth surface of the photonic crystal fiber,
Zhengqi Zhao   +4 more
doaj   +1 more source

Unidirectional transmission in 1D nonlinear photonic crystal based on topological phase reversal by optical nonlinearity

open access: yesAIP Advances, 2017
We propose a scheme of unidirectional transmission in a 1D nonlinear topological photonic crystal based on the topological edge state and three order optical nonlinearity.
Chong Li   +3 more
doaj   +1 more source

Mechanically Tunable Negative-Index Photonic Crystal Lens

open access: yesIEEE Photonics Journal, 2010
We report the microelectromechanical systems (MEMS)-enabled mechanically tunable negative-index photonic crystal lens, which was comprised of 2-D photonic crystal and symmetrical electro-thermal actuators. The 2-D photonic crystal was made of a honeycomb
Y. Cui, V. A. Tamma, J.-B. Lee, W. Park
doaj   +1 more source

Propagation of Light in Photonic Crystal Fibre Devices

open access: yes, 2005
We describe a semi-analytical approach for three-dimensional analysis of photonic crystal fibre devices. The approach relies on modal transmission-line theory. We offer two examples illustrating the utilization of this approach in photonic crystal fibres:
Akbari M   +18 more
core   +1 more source

High quality factors and room-temperature lasing in a modified single-defect photonic crystal cavity [PDF]

open access: yes, 2004
We propose and analyze a new photonic crystal cavity design that supports a dipole mode with a quality factor greater than 20,000. Such a high quality factor is obtained by precise tuning of the cavity length with minimal disruption of the surrounding ...
Hochberg, Michael   +3 more
core   +1 more source

Multiple and colorful cone-shaped lasing induced by band-coupling in a 1D dual-periodic photonic crystal

open access: yesAIP Advances, 2013
We demonstrate multiple and colorful cone-shaped lasing from dual-periodic photonic crystal, indicating that coupling occurs between the photonic bands in a photonic crystal laser system.
Cui-Feng Ying   +5 more
doaj   +1 more source

Study of laser actions by bird’s feathers with photonic crystals

open access: yesScientific Reports, 2021
Random lasers had been made by some biomaterials as light scattering materials, but natural photonic crystals have been rarely reported as scattering materials.
Shih-Wen Chen   +6 more
doaj   +1 more source

General Recipe for Designing Photonic Crystal Cavities [PDF]

open access: yes, 2005
We describe a general recipe for designing high-quality factor (Q) photonic crystal cavities with small mode volumes. We first derive a simple expression for out-of-plane losses in terms of the k-space distribution of the cavity mode.
Englund, Dirk   +2 more
core   +1 more source

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