Thin-film magneto-optic polarization rotator

Details Thin-film magneto-optic polarization rotator Thin-film magneto-optic polarization rotator

G - Physics

02

B

G02B 27/28 (2006.01) G02F 1/095 (2006.01) G02F 1/295 (2006.01)

Patent

CA 2156626

In a polarization rotator device, a thin-film magneto-optic medium (2) is magnetized by a thin-film magnet (4). To serve as an optical isolator, the device may include polarizers (51, 52). In such an optical isolator, in which the magneto-optic medium (2) was formed as a Bi-YIG triple-layer structure, and the thin-film magnet (4) as a single-crystal iron-cobalt layer, an extinction ratio better than -20 dB was realized.

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