Photonic crystals (PCs) can be divided into three categories according to the spatial structure: 1-D, 2-D and 3-D PCs. The advantage of fabricating 1-D PCs with omni-directional photonic bandgap (PBG) is highlighted when applied for the visible and the infrared ranges, since the structural period should be comparable to the wavelength. Once the structure of a dielectric PC is fixed, the optical properties are determined, and it is not easy to change them. It is challenging to explore the possibilities of modifying the optical properties. One solution is to employ magnetic components into the structure [1], because the physical properties, including the optical ones, might be adjusted by external field. Such PCs are called magnetic photonic crystals (MPCs).
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