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Low birefringent magneto-optical waveguides fabricated via organic-inorganic sol-gel process

  • F. Choueikani (a1), F. Royer (a1), S. Douadi (a2), A. Skora (a1), D. Jamon (a1), D. Blanc (a3) and A. Siblini (a1)...

Abstract

This paper is devoted to the study and the characterization of novel magneto-optical waveguides prepared via organic-inorganic sol-gel process. Thin silica/zirconia films doped with magnetic nanoparticles were coated on glass substrate using dip-coating technique. After annealing, samples were UV-treated. Two different techniques were used to measure their properties: m-lines spectroscopy and free space ellipsometry. Results evidence low refractive index waveguides that combine a low modal birefringence (2×10−4) with a Faraday rotation around 15 °/cm (ϕ = 0.1%). The low birefringence is obtained with a soft UV treatment and a graded intrinsic anisotropy is evidenced for films thicker than 5 μm. Therefore, we prove that the organic-inorganic sol-gel approach is very promising to realize magneto-optical waveguides with a non-reciprocal functionality such as TE-TM mode conversion.

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The European Physical Journal - Applied Physics
  • ISSN: 1286-0042
  • EISSN: 1286-0050
  • URL: /core/journals/the-european-physical-journal-applied-physics
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