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Schematic of the 1D MPC whose unit cell comprises a magnetophotonic layer (shaded gray) of thickness and a nonmagnetophotonic layer (striped) of thickness . Whereas is the bicrystalline misalignment angle between the two layers as defined in the text, is the structural period. Light propagation occurs along the axis.
The fifth branch in the Brillouin diagram for an 1D MPC with (a) and (b) ; is the speed of light in free space. The two materials in the unit cell are dielectrically similar: and , which are typical of the constitutive properties of bismuth iron garnet in the infrared regime (Ref. 8). The dotted lines are for the limiting case (no optical gyrotropy), solid lines for , and dashed lines for . Similar features can be observed for other branches in the Brillouin diagram. The Bloch states for in (b) are degenerate, despite both layers in the unit cell being anisotropic.
Calculated dependences of the PBG bandwidth in the fifth branch for different values of . The 1D MPC has dielectrically similar configuration, with constitutive properties the same as for Fig. 2.
Calculated dependence of the PBG bandwidth in the fifth branch for different values of and . These calculations were made for an 1D MPC with dielectrically dissimilar configuration: and .
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