Thin-film magneto-optic polarization rotator

Optical waveguides – Planar optical waveguide – Thin film optical waveguide

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385 6, 385131, G02B 610

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active

054085659

ABSTRACT:
In a polarization rotator device, a thin-film magneto-optic medium is magnetized by a thin-film magnet. To serve as an optical isolator, the device may include polarizers. In such an optical isolator, in which the magneto-optic medium was formed as a Bi-YIG triple-layer structure, and the thin-film magnet as a single-crystal iron-cobalt layer, an extinction ratio better than -20 dB was realized.

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