Xuandi Zhu, Jianhua Yuan. Numerical Simulation for Negative Refractive Index of Two-dimensional Photonic Crystals[J]. Laser & Optoelectronics Progress, 2021, 58(21): 2108002
- Laser & Optoelectronics Progress
- Vol. 58, Issue 21, 2108002 (2021)
Fig. 1. Photonic crystals of two-dimensional square lattice. (a) Schematic structure; (b) cell lattice
Fig. 2. Schematic of Brillouin and irreducible Brillouin regions
Fig. 3. Isofrequency surface of two-dimensional square lattice and its local magnification. (a) Isofrequency surface; (b) local enlargement in TM direction
Fig. 4. Isofrequency surfaces of photonic crystals under different air hole radii. (a) r=0.35L; (b) r=0.30L; (c) r=0.25L;(d) r=0.20L
Fig. 5. Isofrequency surface of 1st negative refraction band under TE mode of two-dimensional square photonic crystal
Fig. 6. Isofrequency surface of 1st negative refraction band under different air hole radii. (a) r=0.45L; (b) r=0.4L
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Table 1. Influence of different air hole radius on frequency range of negative refractive index
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