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Proceedings Paper

Poled glass compared to ferroelectrics for electro-optics and nonlinear frequency conversion in optical waveguides
Author(s): Valerio Pruneri; Michele Belmonte
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Paper Abstract

Ferroelectric materials, e.g. lithium niobate (LN), are widely used for the realization of second-order nonlinear (SON) optical devices, including electro-optic (EO) modulators and switches, frequency converters and all-optical switches based on cascading effects. Glass is a centrosymmetric material and does not show any macroscopic SON properties. However, by appropriate poling techniques significant SON values can be induced, e.g. in silica and silica fibres/waveguides. In fact efficient EO modulation, quasi-phase-matched second-harmonic conversion efficiencies exceeding 20% and parametric fluorescence have been demonstrated in poled silica fibres. Compared to ferroelectric waveguides, poled silica fibres/waveguides, despite having a lower SON, offer longer interaction length for the same bandwidth (due to a lower dispersion), higher damage intensity threshold, lower loss and refractive index, thus keeping high values for the EO and frequency conversion efficiency figure of merits. We will review recent progress on those SON materials, highlighting their advantages and disadvantages.

Paper Details

Date Published: 18 June 2002
PDF: 4 pages
Proc. SPIE 4640, Integrated Optics: Devices, Materials, and Technologies VI, (18 June 2002); doi: 10.1117/12.435129
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Michele Belmonte


Published in SPIE Proceedings Vol. 4640:
Integrated Optics: Devices, Materials, and Technologies VI
Yakov S. Sidorin; Ari Tervonen, Editor(s)

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