Taming the flow of light via active magneto-optical impurities

Hamidreza Ramezani, Zin Lin, Samuel Kalish, Tsampikos Kottos, Vassilios Kovanis, Ilya Vitebskiy

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)


We demonstrate that the interplay of a magneto-optical layer sandwiched between two judiciously balanced gain and loss layers which are both birefringent with misaligned in-plane anisotropy, induces unidirectional electromagnetic modes. Embedding one such optically active non-reciprocal unit between a pair of birefringent Bragg reflectors, results in an exceptionally strong asymmetry in light transmission. Remarkably, such asymmetry persists regardless of the incident light polarization. This photonic architecture may be used as the building block for chip-scale non-reciprocal devices such as optical isolators and circulators.

Original languageEnglish
Pages (from-to)26200-26207
Number of pages8
JournalOptics Express
Issue number24
Publication statusPublished - Nov 19 2012
Externally publishedYes

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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