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Proceedings Paper

Highly photorefractive Eu3+ activated sol-gel SiO2-SnO2 thin film waveguides
Author(s): S. Berneschi; S. N. B. Bhaktha; A. Chiappini; A. Chiasera; M. Ferrari; C. Kinowski; S. Turrell; C. Trono; M. Brenci; I. Cacciari; G. Nunzi Conti; S. Pelli; G. C. Righini
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Paper Abstract

We report on the photorefractive properties of tin-silica slab waveguides, deposited on vitreous-SiO2 by means of sol-gel dip-coating technique. The basic composition of these amorphous binary systems is 75 SiO2 - 25 SnO2 mol% with 1 mol% of Eu3+ ions. Europium was chosen as an optical probe of the glass structure. These guiding structures exhibit low propagation losses (around 0.5 dB/cm at 633 nm) and a high refractive index modulation, as large as - 1.5 × 10-3 under the UV irradiation of a KrF excimer laser source at λ = 248 nm, suitable for writing waveguide gratings.

Paper Details

Date Published: 12 February 2010
PDF: 6 pages
Proc. SPIE 7604, Integrated Optics: Devices, Materials, and Technologies XIV, 76040Z (12 February 2010); doi: 10.1117/12.843210
Show Author Affiliations
S. Berneschi, IFAC-CNR (Italy)
S. N. B. Bhaktha, LPMC, CNRS, Univ. de Nice-Sophia Antipolis (France)
A. Chiappini, IFN-CNR (Italy)
A. Chiasera, IFN-CNR (Italy)
M. Ferrari, IFN-CNR (Italy)
C. Kinowski, LASIR, CNRS, Univ. des Sciences et Technologies de Lille (France)
S. Turrell, LASIR, CNRS, Univ. des Sciences et Technologies de Lille (France)
C. Trono, IFAC-CNR (Italy)
M. Brenci, IFAC-CNR (Italy)
I. Cacciari, IFAC-CNR (Italy)
G. Nunzi Conti, IFAC-CNR (Italy)
S. Pelli, IFAC-CNR (Italy)
G. C. Righini, IFAC-CNR (Italy)


Published in SPIE Proceedings Vol. 7604:
Integrated Optics: Devices, Materials, and Technologies XIV
Jean-Emmanuel Broquin; Christoph M. Greiner, Editor(s)

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