Analysis of tunable photonic band structure in an extrinsic plasma photonic crystal

King, Tzu Chyang; Yang, Chih-Chiang; Hsieh, Pei Hung; Chang, Tain-Sao; Wu, Chien Jang

doi:10.1016/j.physe.2014.11.001

Cited by 39 publications

(10 citation statements)

References 14 publications

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“…In addition, the magnetized cold plasma (MCP), bulk plasma under periodic magnetic field, has attracted the interest of many investigators globally. [ 10–13 ] The cold plasma based PC structure generally works in GHz frequency regions. These are also called extrinsic PPCs and their reflection/transmission spectra can be tuned externally.…”

Section: Introductionmentioning

confidence: 99%

Microwave Propagation Characteristics in Magnetized‐Cold‐Plasma‐Based Binary Photonic Crystal with Defect of MCP Layer

Kumar

Pandey

Dhayal

et al. 2023

Macromolecular Symposia

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In this communication, the TMM for the analysis of transmission characteristics of MCP based PCs is employed. The periodic structure of air/right-hand-MCP, in asymmetric form (AB) N , is considered as RHPPC. The transmission characteristics of the same structure are analyzed with symmetrically introduced defect layer of MCP for different values of the magnetizing field. It is observed that this binary RHPPC in both cases acts as good reflectors in low and high frequency ranges for low magnetic field between 0.4T to 1.2T; and the bandgaps vanish at higher magnetic field above 1.2T, in both types of PCs. Further, it is noticed that the transmittance in defect introduced PC is low in comparison to corresponding PC without defect, for a particular value of magnetic field up to 1.2T. The defective RHPPC exhibits defect modes in the bandgap regions. Hence, an increase in magnetic field decreases the bandgaps and consequently increases the transmission in both cases; while impact of defect is to reduce the transmission. The lowest reverse transmission peak for the defective PC obtained with the value of magnetic field from 2.0T to 2.4T shows more transmission as compared to that of the PC without defect. The insights of this comparative analysis can be used in designing tunable microwave transmitters.

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Section: Introductionmentioning

confidence: 99%

Microwave Propagation Characteristics in Magnetized‐Cold‐Plasma‐Based Binary Photonic Crystal with Defect of MCP Layer

Kumar

Pandey

Dhayal

et al. 2023

Macromolecular Symposia

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“…Initially, the thickness of different layers is selected as , , and . The value of is , whereas the value of is taken as 40 . The value of is considered as a constant because the collision frequency ( has a negligible impact on the resonant peaks 55 , 56 .…”

Section: Resultsmentioning

confidence: 99%

“…The permittivity of the MCP layer as a function of external magnetic field and frequency in gigahertz range can be calculated as 36 , 40 , 45 , 50 , 51 : where , , , and are angular frequency, plasma frequency, gyrofrequency, and effective collision frequency, respectively. plasma frequency and gyrofrequency can be calculated as: where , e and are electron density, electron mass, vacuum permittivity, electronic charge, and external magnetic field, respectively.…”

Section: Proposed Structure and Theoretical Modelmentioning

confidence: 99%

“…can be effectively managed to regulate the refractive index of MCP material. Owing to the aforementioned property of MCP, it can be considered as a good alternative to conventional metal and dielectric materials vis-à-vis the study and fabrication of PhC 40 , 41 . The first concept of MCP material was introduced by Hojo et al 42 , where the authors demonstrated the PBG characteristics in a magnetized plasma-based photonic crystal (MCPPhC).…”

Section: Introductionmentioning

confidence: 99%

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The impact of magnetized cold plasma and its various properties in sensing applications

Zaky

Panda

Pukhrambam

et al. 2022

Sci Rep

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These analyses present a novel magnetized cold plasma-based 1D photonic crystal structure for detecting the refractive index of various bio-analytes. The proposed structure is designed with two photonic crystals composed of an alternating layer of right-hand polarization and left-hand polarization of the magnetized cold plasma material with a central defect layer. Transmittance characteristics of the structure are studied by employing the well-known transfer matrix method. Various geometrical parameters such as electron density, external magnetic field, thickness of odd and even layers of the multilayers, thickness of the sample layer, and incident angle are judiciously optimized to attain the best sensitivity, figure of merit, quality factor, signal-to-noise ratio, detection range and limit of detection. Finally, a maximum sensitivity of 25 GHz/RIU is accomplished with the optimized value of structure parameters, which can be considered as a noteworthy sensing performance.

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“…The permittivity of MCP layer can be calculated in GHz as (Awasthi et al 2018;King et al 2015;Nayak et al 2017)…”

Section: Materials and Simulation Methodsmentioning

confidence: 99%

Gas sensing applications using magnetized cold plasma multilayers

Zaky

Amer

Suthar³

et al. 2022

Opt Quant Electron

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In this paper, we theoretically propose a novel magnetic field-dependent sensor using omnidirectional magnetized cold plasma photonic crystal in one dimension for TE polarization. The structure consists of asymmetric two periodic arrays from magnetized cold plasma and sample cavity layer. Between the periodic arrays, a sample cavity is sandwiched between two quartz layers. The methodology of the proposed detector depends on the appearance of a sensitive defect mode. The results clear that the defect mode frequency depends significantly on the refractive index of the sample, and it is extremely sensitive to incident angle changes, applied magnetic field, the number density of electrons, and sample layer thickness. The optimized proposed sensor has high sensitivity of 15.14 GHz/RIU, quality-factor of 527.32, and figure of merit of 1066.20 RIU−1, where RIU means refractive index unit. So, the proposed sensor can aid in solving many challenges in chemical and environmental applications.

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Analysis of tunable photonic band structure in an extrinsic plasma photonic crystal

Cited by 39 publications

References 14 publications

Microwave Propagation Characteristics in Magnetized‐Cold‐Plasma‐Based Binary Photonic Crystal with Defect of MCP Layer

Microwave Propagation Characteristics in Magnetized‐Cold‐Plasma‐Based Binary Photonic Crystal with Defect of MCP Layer

The impact of magnetized cold plasma and its various properties in sensing applications

Gas sensing applications using magnetized cold plasma multilayers

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