Thin-film waveguide magneto-optic isolator
- 1 May 1985
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 46 (9) , 817-819
- https://doi.org/10.1063/1.95894
Abstract
A thin‐film waveguide Faraday rotator which provides nonreciprocal polarization rotation of ±45° for light of wavelength 1.45 μm with an extinction ratio of 500:1 has been demonstrated. This isolator structure makes use of laser annealing to reverse the sublattice magnetization and hence the sign of the Faraday effect in localized regions of a (Bi, Ga) yttrium iron garnet film. A novel geometrical pattern was designed for these regions to overcome the effects of the inherent thin‐film birefringence.Keywords
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- Switching and modulation of light in magneto-optic waveguides of garnet filmsApplied Physics Letters, 1972