Thin-film waveguide magneto-optic isolator

R. Wolfe, J. Hegarty, J. F. Dillon, L. C. Luther, G. K. Celler, L. E. Trimble, C. S. Dorsey

Research output: Contribution to journalArticlepeer-review

35 Scopus citations


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.

Original languageEnglish (US)
Pages (from-to)817-819
Number of pages3
JournalApplied Physics Letters
Issue number9
StatePublished - 1985
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)


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