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首页> 外文会议>Conference on Integrated Optics: Devices, Materials, and Technologies Ⅵ Jan 21-23, 2002 San Jose, USA >Poled glass compared to ferroelectrics for electro-optics and nonlinear frequency conversion in optical waveguides
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Poled glass compared to ferroelectrics for electro-optics and nonlinear frequency conversion in optical waveguides

机译：与铁电体相比，极光玻璃在光波导中用于电光和非线性频率转换

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摘要

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, highlight their advantages and disadvantages.
机译：铁电材料，例如铌酸锂（LN）被广泛用于实现二阶非线性（SON）光学设备，包括基于级联效应的电光（EO）调制器和开关，变频器和全光开关。玻璃是一种中心对称材料，没有任何宏观的SON特性。但是，通过适当的轮询技术，可以感应出重要的SON值，例如在二氧化硅和二氧化硅纤维/波导中。实际上，在极化石英纤维中已经证明了有效的EO调制，准相匹配的二次谐波转换效率超过20％和参量荧光。与铁电波导相比，极化二氧化硅纤维/波导尽管具有较低的SON，但在相同带宽下（由于较低的色散）可提供更长的相互作用长度，更高的损伤强度阈值，更低的损耗和折射率，因此可保持较高的折射率。 EO和变频效率的优劣系数。我们将回顾这些SON材料的最新进展，重点介绍它们的优缺点。

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