Phase matched magnetooptic planar waveguide elaborated by magnetic nanoparticles embedded in an organic-inorganic sol-gel matrix

F. Choueikani; F. Royer; D. Jamon; S. Neveu; J. Charara

doi:10.1117/12.781238

1 May 2008 Phase matched magnetooptic planar waveguide elaborated by magnetic nanoparticles embedded in an organic-inorganic sol-gel matrix

F. Choueikani, F. Royer, D. Jamon, S. Neveu, J. Charara

Author Affiliations +

Proceedings Volume 6996, Silicon Photonics and Photonic Integrated Circuits; 69961L (2008) https://doi.org/10.1117/12.781238
Event: SPIE Photonics Europe, 2008, Strasbourg, France

Abstract

This paper presents a magnetooptical way to reduce the modal birefringence of planar waveguides, which is a critical point for applications. Indeed, composite material, made of Cobalt ferrite (CoFe₂O₄) nanoparticles embedded in a silica/zirconia matrix by the sol-gel method, are used to develop a phase matched magnetooptic planar waveguides. Such thin composite films coated on a pyrex slide using the dip-coating technique were studied. They were submitted to a UV-treatment, under an applied magnetic field. Two techniques were used to characterize these thin films: M-lines spectroscopy and Ellipsometry. Results show the dependence of the modal birefringence ΔN value as well as the TE-TM phase mismatch on the magnetic field orientation (in plane or out of plane) applied during the UV exposure phase. They prove that a phase match is achieved on a waveguide having a 1,5 refractive index and 1,8 μm of thickness, at 820 nm. Interpretations of these results, due to a linear permanent anisotropy led by the nanoparticles orientation in the film, are given.

Citation Download Citation

F. Choueikani, F. Royer, D. Jamon, S. Neveu, and J. Charara "Phase matched magnetooptic planar waveguide elaborated by magnetic nanoparticles embedded in an organic-inorganic sol-gel matrix", Proc. SPIE 6996, Silicon Photonics and Photonic Integrated Circuits, 69961L (1 May 2008); https://doi.org/10.1117/12.781238

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