Photorefractive thin films and waveguides
At CLEO'92: Conference on Lasers & Electro-Optics, United States.
10 - 15 May 1992.
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The fabrication of photorefractive waveguides for use in holographic processors, integrated-optic applications, and optical memory devices is a particularly desirable goal. To date, small diameter (<100µm) crystal fibers of materials such as SBN have successfully been grown, but their bulk and surface optical quality can be poor, and clad fibers are not readily available. Planar guides of Ti indiffused photorefractive LiNbO3 are more easily fabricated, but the materials of most interest to the photorefractive community, such as BaTiO3, SBN or BSO, have not been produced as low-loss waveguide structures, apart from a few reports on highly multimode thin cleaved crystal wafers.
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