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The authors show that one-dimensional magneto-optical photonic crystals can achieve one-way total reflection. The unit cell of the crystal, which consists of two bismuth iron garnet layers with opposite magnetization and one SiO2 layer, is designed to simultaneously break time-reversal, spatial inversion, and mirror symmetries. Such crystals are important for creating compact broadband optical isolators.
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Yu et al. (2007) studied this question.
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