Functional control from broad waveguides, photonic crystal and "Littrow mode" approaches
0
Citation
0
Reference
10
Related Paper
Keywords:
Mode (computer interface)
Topics:
Cite
It is demonstrated experimentally that amplitudes of defect modes of one-dimensional photonic crystal have maximal value near edges of the photonic band gap while at the centre of the stop-band they are reduced, moreover than more number of layers in photonic crystal, the less the amplitude of defect mode at the center of the PBG. We explain such behavior of defect modes presence of losses at propagation of light in real photonic crystal structures.
Yablonovite
Center frequency
Cite
Citations (0)
A one-dimension photonic crystal containing usual isotropic, backward wave, and bianisotropic (anisotropic) layers is investigated by using the translation matrix method. The particular cases of the problem of layer rearrangement within a period is considered. It is describe the types of photonic crystals that have the same bandgap and the photonic crystals that have no bandgap.
Photonic metamaterial
Photonic bandgap
Yablonovite
Matrix (chemical analysis)
Cite
Citations (1)
The phase dependence of light reflected from colloidal photonic crystals is measured using a large resonant cavity and self-assembled colloidal photonic crystals. We measure the expected phase shift upon reflection from the photonic crystal, which varies from 0to180deg across the photonic crystal stop band. These measurements are then fed directly into the design of photonic crystal cavities. We obtain a measure for the precision needed in the fabrication of photonic crystal resonant cavities.
Yablonovite
Reflection
Photonic metamaterial
Colloidal crystal
Cite
Citations (33)
We numerically and experimentally investigate dependence of quality factor Q of photonic crystal H1-defect nanocavity on the slab thickness and demonstrate an increase of Q after closing of the photonic bandgap. This counter intuitive behavior results from the weak coupling between the cavity mode and the 2 nd - guided mode.
Q factor
Yablonovite
Slab
Photonic bandgap
Mode (computer interface)
Cite
Citations (0)
This work investigates the significance of the number of periods in two-dimensional photonic crystals. Models have been developed to study various photonic crystal properties (Reflection, Photonic crystal band gap). The numbers of photonic crystal periods, length of periods, and material properties have been investigated to determine their effect on the losses in the waveguide. The model focuses on a square period and has been designed to study transmission properties and the effects of period length. A finite difference frequency domain (FDFD) model has also been created to calculate the photonic band structure. Additionally, a simplified study focuses on the transmission of light through photonic crystal layers.
Yablonovite
Reflection
Waveguide
Cite
Citations (1)
Photonic crystals are optical materials with repeating structures. This paper reviews the light reflection characteristics of one dimensional (lD) photonic crystals with defects in the visible region. Designing the ID photonic crystal for reflection based applications such as mirrors and reflection coatings, knowledge of photonic bandgap and the reflection characteristics in the periodic structure is essential. Modeling of flow of light in photonic crystals are studied with Comsol simulations which is based on FEM method. An observational study on reflection properties of ID photonic crystal reveals the impacts of periodic layer thickness, refractive index, and periodicity on light. The reflection spectrum of the photonic crystal structure with defects have been analyzed and a deep understanding of the photonic crystal with defect has been achieved. In this paper it is proposed that consistently high reflection can be achieved along with the structure optimization using defects.
Reflection
Yablonovite
Photonic metamaterial
Structural Coloration
Cite
Citations (4)
Summary form only given. Propagation of electromagnetic (EM) waves in periodic dielectric structures can be completely forbidden for a certain range of frequencies. These three-dimensional arrays - photonic bandgap (PBG) crystals - can be used to engineer the properties of the radiation field within these structures. Although, the earlier work on photonic crystals concentrated on building structures using dielectric materials, there are certain advantages of introducing metals to photonic crystals. First, the metals offer a higher rejection rate per layer when compared to dielectric crystals. Second, for microwave applications the dimensions of metallic crystals can be kept much smaller than the minimum dimensions needed for a typical dielectric crystal. In the paper, we investigate the reflection properties of layer-by-layer metallic photonic crystals, and use these properties to predict defect formation in layer-by-layer metallic photonic crystals.
Reflection
Yablonovite
Photonic metamaterial
Cite
Citations (0)
Photonic crystals(PCs) are periodic dielectric-structure materials with a photonic bandgap for electromagnetic waves.By combining stimuli-sensitive material with photonic crystals,the formed photonic crystals can respond to the external environments,which are named as responsive photonic crystals.Being a new branch of photonic crystals,responsive photonic crystals have attracted considerable attention as applications in sensors,biomedicine,clinical assay,sensor etc in recent years.According to difference of external environments,responsive photonic crystals can be briefly classified into three different types,chemical responsive photonic crystals,physical responsive photonic crystals and biological responsive photonic crystals.In this article,we mainly review the progress in chemical responsive photonic crystals in recent years,including metal ion-responsive,pH-responsive,redox-responsive,glucose-responsive and photochemistry-responsive photonic crystals.
Photonic metamaterial
Yablonovite
Cite
Citations (1)
Photonic crystal is a dielectric with periodic modulation of refractive index of constituent elements which results in photonic band-gap effect which is unique property of Photonic crystal. Such Band gap effect helps to analyse the optical performance of Photonic crystals. This paper deals with Photonic Band gap (PBG) calculations for two dimensional Photonic crystals and the effect of size that is radius of silicon pillar on PBG. Plane Wave Expansion (PWE) method is used for obtaining band structure.
Yablonovite
Plane wave expansion
Photonic metamaterial
Cite
Citations (2)
Two dimension photonic crystal behaving in the region of micro wave composed of Fused silica cylinders(e=3.72) embedded in a styrofoma templat(e=1.04) being a high contrast system, it is a necessary. Condition for two dimension photonic crystal having photonic hand gap ((3.72-1.04)/(3.72+1.04)0.5) and set up a measurable system with syntheside sweeper and network analyzer etc. The transimission specturm of the photonic crystal were measured. There is a photonic band gap between 11.8 GHz and 13.5 GHz. We have a photonic band gap between 11.75 GHz and 13.4 GHz calculated by 421 plane waves, so the both agree well with each other.
Yablonovite
Square lattice
Plane wave expansion
Lattice (music)
Cite
Citations (0)