Abstract
This work presents the design and analysis of a super wideband nano-scaled optical antenna for terahertz (THz) wireless communication applications in the visible light spectrum (380 nm to 700 nm). The proposed antenna is designed on a 50 nm thick GaAs substrate with a dielectric constant of 12.94. The radiating patch of the suggested antenna is configured in the shape of a flower’s petal through the intersection of three modified circles. The suggested compact antenna (500 × 600 nm2) offers an attractive impedance and radiation characteristics in terms of reflection coefficient, VSWR, gain, radiation efficiency and radiation patterns. The performance of the proposed antenna has been judged by executing the design on various substrate materials. The designed nano-sized antenna offers a super wide impedance bandwidth (SWIB) of 118.23 THz (439.36–557.59 THz) with a peak radiation efficiency of 92%, and peak gain of 5.8 dBi. The suggested THz optical nano antenna covers a broad optical wavelength from 538.02 nm (557.59 THz) to 682.81 nm (439.36 THz) with attractive characteristic parameters and hence it would be an exemplary choice for optical communication and nano-photonics to support short-range high-speed indoor wireless communication, biomedical imaging, security scanning, detection of explosive, and material characterization in the THz optical regime.
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All the data generated during and/or analyzed during the current study are available from the corresponding author on reasonable request.
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Implemented through computer simulation technology (CST) software.
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All authors contributed to the study, conception, design, and simulation. Data collection, analysis, and simulation were initially carried out by SD, SL, and CMK. Additional input to analysis and simulation was given by SV, BM, and FA. All authors contributed to complete the writing and presentation of the whole manuscript.
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Das, S., Lakrit, S., Krishna, C.M. et al. A novel flower petal-shaped super wideband (439.36–557.59 THz) optical nano-antenna for terahertz (THz) wireless communication applications. Opt Quant Electron 55, 516 (2023). https://doi.org/10.1007/s11082-023-04802-z
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DOI: https://doi.org/10.1007/s11082-023-04802-z