Finite-difference time-domain analysis of electromagnetic wave propagation in corrugated waveguide: Effect of miter bend/polarizer miter bend

Fujita, Yoshiaki; Ikuno, Soichiro; Kubo, S.; Nakamura, Hiroaki

doi:10.7567/jjap.55.01ah06

Cited by 4 publications

(1 citation statement)

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“…Moreover, various studies have additionally conducted frequency analysis of the wave propagation simulated by FDTD. Fujita et al [7] employed FDTD method for electromagnetic wave propagation in a corrugated waveguide and showed that reflection waves occur in different frequency modes. Moreover, some researches have been performed to analyze wave propagation using the Fourier transform (FT) in the frequency domain, such as [8,9,10].…”

Section: Introductionmentioning

confidence: 99%

Photonic Crystal Frequency Demultiplexer Design for Electromagnetic Wave using FDTD and MEMD

Dong

Shigeta

Fujita

et al. 2022

JASSE

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Photonic crystals are widely employed in industry fields due to their bandgap property, which can confine and propagate electromagnetic waves inside the structure as a photonic waveguide. As this property can be adopted to propagate distinct frequency waves by changing the photonic structure, photonic crystals are also applied in frequency demultiplexer design. The finite-difference time-domain (FDTD) method is commonly applied to simulate electromagnetic wave propagations in photonic crystals, helping determine the desired bandgaps for frequency demultiplexers. Meanwhile, the multivariate empirical mode decomposition (MEMD) nonlinearly decomposes multivariate signals in the instantaneous frequency domain. Therefore, MEMD can verify and visualize the designed frequency demultiplexer made of photonic crystals by considering simulation results as a multi-channel signal. This research aims to propose a method to design and evaluate frequency demultiplexers using FDTD and MEMD. In this paper, photonic crystal bandgaps are adopted to design a frequency demultiplexer to separate two different frequency electromagnetic waves. Then, MEMD is employed to the result of frequency demultiplexer propagation simulated by FDTD. Our results reveal that the frequency demultiplexer made of photonic crystals can be designed using the bandgap properties, and its simulation results by FDTD method can be verified and visualized in the instantaneous frequency domain using MEMD.

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Section: Introductionmentioning

confidence: 99%