Table 1 Comparison of the resonant frequency and Q-factor of different cavities in the proposed structure calculated by both FEM and semi-analytic approaches.

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

nx × ny

Resonating frequency (GHz)

Q-factor

FEM

Semi-analytic

FEM

Semi-analytic

2 × 0

8.2314

8.2319

1.02 × 106

\(1.13\times {10}^{6}\)

2 × 1

8.2318

8.2381

6.85 × 105

\(6.92\times {10}^{5}\)

2 × 2

8.2315

8.2298

1.02 × 107

\(1.12\times {10}^{7}\)