Eur. Phys. J. Appl. Phys.
Volume 47, Number 3, September 2009
|Number of page(s)||8|
|Section||Physics of Organic Materials and Devices|
|Published online||05 June 2009|
Low birefringent magneto-optical waveguides fabricated via organic-inorganic sol-gel process
Laboratoire Dispositifs et Instrumentation en Optoélecronique et Microondes – EA3523, Université Jean Monnet, 23 rue Michelon, 42023 Saint-Étienne Cedex 2, France
2 Laboratoire des Liquides Ioniques et Interfaces Chargées – UMR CNRS 7412, Université Pierre et Marie Curie, 4 place Jussieu, 75252 Paris Cedex 05, France
3 Laboratoire Hubert Curien – UMR CNRS 5516, Université Jean Monnet, 18 rue Benoît Lauras, 42000 Saint-Étienne, France
Corresponding author: firstname.lastname@example.org
Accepted: 23 March 2009
Published online: 5 June 2009
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.
PACS: 78.66.Sq – Composite materials / 78.20.Fm – Birefringence / 78.20.Ls – Magneto-optical effects
© EDP Sciences, 2009
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