Poled glass compared to ferroelectrics for electro-optics and nonlinear frequency conversion in optical waveguides

Valerio Pruneri; Michele Belmonte

doi:10.1117/12.435129

18 June 2002 Poled glass compared to ferroelectrics for electro-optics and nonlinear frequency conversion in optical waveguides

Valerio Pruneri, Michele Belmonte

Author Affiliations +

Proceedings Volume 4640, Integrated Optics: Devices, Materials, and Technologies VI; (2002) https://doi.org/10.1117/12.435129
Event: Symposium on Integrated Optoelectronic Devices, 2002, San Jose, California, United States

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.

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Valerio Pruneri and Michele Belmonte "Poled glass compared to ferroelectrics for electro-optics and nonlinear frequency conversion in optical waveguides", Proc. SPIE 4640, Integrated Optics: Devices, Materials, and Technologies VI, (18 June 2002); https://doi.org/10.1117/12.435129

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