Transmission characteristics of photonic crystal waveguide with array square Al2O3 rods lattice in millimeter wave

Xu, Biaogang; Zhang, Dengguo; Zeng, Xierong; Wang, Yong; Dong, Zheng

doi:10.1016/j.optmat.2019.109364

Cited by 7 publications

(6 citation statements)

References 26 publications

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“…Therefore, structural engineering of NAA enables new paths to modulating its effective refractive index in 1D, 2D, or 3D distributions to form PC structures such as distributed Bragg reflectors, − microcavities, and gradient index filters. ,,− NAA-PC structures have demonstrated unique optical properties to guide, reflect, transmit, emit, and enhance incident photons for specific applications. Recent progress in anodization technology has focused on the structural engineering of NAA-PCs by distinct forms of pulse-like anodization approaches such as sinusoidal, ,− sawtooth, pseudostepwise, and stepwise . In contrast to pioneering pulse-like anodization combining hybrid pulses between mild and hard anodization regimes, − pulse anodization performed under mild conditions, moderate electrolyte temperature, and anodizing voltage/current density provide superior controllability over the anodic oxide growth rate and its porosity, enabling new paths to engineering the structure of NAA with precision to achieve versatile control of light for specific applications such as optical sensing, , biosensing, ,− and photocatalysis .…”

Section: Introductionmentioning

confidence: 99%

Tunable Nanoporous Anodic Alumina Photonic Crystals by Gaussian Pulse Anodization

Acosta

Berto-Rosello

Xifré-Pérez

et al. 2020

ACS Appl. Mater. Interfaces

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This study presents a Gaussian pulse anodization approach to generate nanoporous photonic crystals with highly tunable and controllable optical properties across the visible−NIR spectrum. Nanoporous anodic alumina Gaussian photonic crystals (NAA-GPCs) are fabricated in oxalic acid electrolyte by Gaussian pulse anodization, a novel form of pulse-like anodization. The effect of the Gaussian pulse width in the anodization profile on the optical properties of these photonic crystals is assessed by systematically varying this fabrication parameter from 5 to 60 s. The optical features of the characteristic photonic stopband (PSB) of NAA-GPCsthe position of the central wavelength, full width at halfmaximum, and intensityare found to be highly dependent on the Gaussian pulse width, the angle of incidence of incoming photons, and the nanopore diameter of NAA-GPCs. The effective medium of NAA-GPCs is assessed by monitoring spectral shifts in their characteristic PSB upon infiltration of their nanoporous structure with analytical solutions of D-glucose of varying concentration (0.0125−1 M). Experimental results are validated and mechanistically described by theoretical simulations, using the Looyenga− Landau−Lifshitz effective medium approximation model. Our findings demonstrate that Gaussian pulse anodization is an effective nanofabrication approach to producing highly sensitive NAA-based PC structures with versatile and tunable PSBs across the spectral regions. The findings provide new exiting opportunities to integrate these unique PC structures into photonic sensors and other platform materials for light-based technologies.

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Section: Introductionmentioning

confidence: 99%

Tunable Nanoporous Anodic Alumina Photonic Crystals by Gaussian Pulse Anodization

Acosta

Berto-Rosello

Xifré-Pérez

et al. 2020

ACS Appl. Mater. Interfaces

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“…These RI variations are compensated by shifting the defect mode position at new wavelength inside PBG. Beside this PCs are the promising structures for several other tunable optical devices, such as optical switches, limiter, filters, and communication devices [13][14][15][16][17][18][19][20]. The working methodology of all above mentioned tunable photonic devices is almost same.…”

Section: Introductionmentioning

confidence: 99%

One-dimensional defective photonic crystal as a high-performance sensor for bacterial water-borne

Aly

Mohamed

Awasthi

et al. 2021

Preprint

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The present work deals with photonic sensing technology used for biosensing applications. In this paper we have theoretically examined the transmission properties of one-dimensional (1D) defect photonic crystal (DPC) suitable for biosensing applications. The number of contaminated water samples containing different types of bacteria is poured into the defect layer region and corresponding change in the transmission peaks of defect mode inside photonic bandgap (PBG) has been observed. The proposed structure is composed of two sub-photonic crystals (PCs) containing Si and TiO2 material layers. These two sub-PCs are separated by defect layer of air in which various sensing samples has to be poured one by one. The performance of the proposed biosensor is verified by measuring redshift in the central wavelength of defect mode inside PBG depending upon the change in refractive index of various water borne bacteria samples from 1.333 to 1.43. The sensitivity of the proposed biosensor reaches to high value of 483.6 nm/RIU for Escherichia coli (E. coli) bacteria sample. The proposed biosensor achieves high value of figure of (FOM) of order 104 and low value of limit of detection (LOD) of order 10− 6 which makes our biosensor suitable for biosensing applications.

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“…Moreover, the deformation of the PCs periodicity could lead to the localization of the electromagnetic waves with specified wavelengths as resonant or defect modes [22]. Thus, many researchers devoted their attention towards the PCs fabrications [15,16,[23][24][25][26]. In recent time, 1D PCs and PC cavities are experimentally investigated based on the spin coating and cyclic anodizing techniques [15,16,23,24].…”

Section: Introductionmentioning

confidence: 99%

“…In recent time, 1D PCs and PC cavities are experimentally investigated based on the spin coating and cyclic anodizing techniques [15,16,23,24]. In addition, 2D PCs fiber and waveguides are demonstrated for the sensing and communication applications [25,26]. Hence, PCs could be the cornerstone of many promising applications.…”

Section: Introductionmentioning

confidence: 99%

Theoretical verification of photonic crystals sensor for biodiesel detection and sensing

Elsayed

Mehaney

2020

Phys. Scr.

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Among the two past decades, the biodiesel fuels received a significant attention due to its lower hydrocarbon emissions and low sulfur diesel. However, the incomplete transesterification represents the main problem for the possibility of wider use. Thus, we present in this research a new method for detecting and measuring of methyl ester biodiesel fuel based on its optical characteristics. The proposed sensor is designed using the well-known one dimensional photonic crystals. The cornerstone of our idea is mainly based on two sides. First, the inclusion of methyl ester as a defect layer inside the one dimensional photonic crystals gives rise to the formation of a resonant peak within the photonic band gap. Second, the concentration of the converted methyl ester due to the transesterification reaction of soybean oil is closely related to its refractive index. Therefore, the sensing and detection procedure is essentially based on the dependence of the characteristics of the resonant peak on the concentration of the biodiesel fuel. The parameters that refer to the performance of our sensor such as, the sensitivity, figure of merit and the detection limit are investigated. Moreover, the effect of the defect layer thickness and the angle of incidence on the performance of our sensor is demonstrated. The numerical results show that our design could provide high sensitivity of 136 nm RIU−1 and figure of merit 2240 RIU–1. In addition to that, it could differentiate between the different biodiesel fuels despite the very limited difference between their indices of refraction.

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Transmission characteristics of photonic crystal waveguide with array square Al2O3 rods lattice in millimeter wave

Cited by 7 publications

References 26 publications

Tunable Nanoporous Anodic Alumina Photonic Crystals by Gaussian Pulse Anodization

Tunable Nanoporous Anodic Alumina Photonic Crystals by Gaussian Pulse Anodization

One-dimensional defective photonic crystal as a high-performance sensor for bacterial water-borne

Theoretical verification of photonic crystals sensor for biodiesel detection and sensing

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