This study investigates the optimization of plasmon-induced transparency (PIT) structures incorporating two-dimensional materials for advanced optical filtering applications in the terahertz spectrum. Through systematic finite difference time domain simulations, we analyze how structural symmetry breaking, material composition variation, and electronic tuning affect filtering performance. Transitioning from symmetric to asymmetric configurations significantly enhances filtering efficiency by increasing transparency window count and improving absorption peak definition, with optimal results achieved in semi-asymmetric alignments. The introduction of additional graphene dark modes refines spectral characteristics through cross-coupling mechanisms, though with diminishing returns as mode count increases. Fermi energy tuning of graphene (0.4-1.0 eV) enables dynamic spectral control, producing predictable window shifts of approximately 0.8-1.0 THz per 0.2 eV increase, with higher values progressively flattening transparency windows above 40 THz. Substituting graphene with anisotropic phosphorene in selected dark modes introduces material-dependent spectral broadening, offering additional customization options at the expense of window sharpness. These findings reveal crucial design principles for high-performance, frequency-selective filters, highlighting the interplay between geometric configuration, material selection, and electronic tunability in PIT-based photonic devices.
Khanpour, M. A. and Karimzadeh, R. (2026). Geometric Asymmetry and 2D Material Engineering in Plasmon-Induced Transparency Filters. Pioneering Advances in Materials, 1(1), 8-21. doi: 10.48308/piadm.2025.105735
MLA
Khanpour, M. A. , and Karimzadeh, R. . "Geometric Asymmetry and 2D Material Engineering in Plasmon-Induced Transparency Filters", Pioneering Advances in Materials, 1, 1, 2026, 8-21. doi: 10.48308/piadm.2025.105735
HARVARD
Khanpour, M. A., Karimzadeh, R. (2026). 'Geometric Asymmetry and 2D Material Engineering in Plasmon-Induced Transparency Filters', Pioneering Advances in Materials, 1(1), pp. 8-21. doi: 10.48308/piadm.2025.105735
CHICAGO
M. A. Khanpour and R. Karimzadeh, "Geometric Asymmetry and 2D Material Engineering in Plasmon-Induced Transparency Filters," Pioneering Advances in Materials, 1 1 (2026): 8-21, doi: 10.48308/piadm.2025.105735
VANCOUVER
Khanpour, M. A., Karimzadeh, R. Geometric Asymmetry and 2D Material Engineering in Plasmon-Induced Transparency Filters. Pioneering Advances in Materials, 2026; 1(1): 8-21. doi: 10.48308/piadm.2025.105735
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