Design and analysis of 2D one-way splitter waveguide based on topological photonics.

Mohammadreza Mehdipoura, Mohammadreza Moeini, Vahid Ahmadi, Reza Poursalehi

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Article in Scientific reports, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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4 authors.

Mohammadreza MehdipouraDepartment of Nanotechnology Engineering, Tarbiat Modares University, Tehran, Iran.

Mohammadreza MoeiniDepartment of Electrical and Computer Engineering, Tarbiat Modares University, Tehran, Iran.

Vahid AhmadiDepartment of Electrical and Computer Engineering, Tarbiat Modares University, Tehran, Iran. v_ahmadi@modares.ac.ir.

Reza PoursalehiDepartment of Nanotechnology Engineering, Tarbiat Modares University, Tehran, Iran.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

We present a new high-efficiency splitter waveguide design based on photonic topological insulators. The system's robust edge states allow electromagnetic waves to propagate in the 2D waveguide without backscattering, resulting in almost 100% transmission in the outputs. We also study resonating modes in the structure and show that introducing specific defects can create such modes. We consider four domains with rods of varying magneto-optical properties to provide edge modes in the system. By eliminating rows and columns of rods, we calculate the transmission at the outputs, revealing resonating modes in the middle of the structure with spatial symmetry. Our calculations indicate that the most promising resonating mode occurs when two rods and two columns are eliminated, with a quality factor Q = 1.02 × 10

Indexed as

Edge modesPhotonic topological insulatorResonating modesSplitter waveguides

Identifiers

PMID38839832

DOI10.1038/s41598-024-62816-3

PMCPMC11153527

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