Optical fiber poling by induction.
Optical fiber poling by induction.
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DOI：
10.1364/ol.39.006513
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发表时间：
2014-11
期刊：
影响因子：
3.6
通讯作者：
F. D. Lucia;D. Huang;C. Corbari;N. Healy;P. Sazio
中科院分区：
文献类型：
--
作者：
F. D. Lucia;D. Huang;C. Corbari;N. Healy;P. Sazio
传统的热极化方法需要与内部光纤电极直接物理接触。在这里，我们报告了一种间接的静电感应技术，使用电浮动线内的纤维结合外部电场，可以允许任意长的长度的复杂的微结构光纤（MOF）的轻松极化。结合我们使用液体镓电极的独特能力，在难以进入的多芯或多孔MOF内部诱导二阶非线性现在变得完全可行和实用。永久性二阶非线性的形成是明确地证明了通过实现准相位匹配倍频器使用周期性的UV擦除方法中的感应极化光纤。在光纤内部产生的二阶极化率是由浮动电极之间建立的电势差驱动的，我们通过数值模拟计算得出。
Conventional thermal poling methods require direct physical contact to internal fiber electrodes. Here, we report an indirect electrostatic induction technique using electrically floating wires inside the fiber combined with external electric fields that can allow for facile poling of complex microstructured fibers (MOFs) of arbitrarily long lengths. In combination with our unique ability to use liquid gallium electrodes, inducing second-order nonlinearities inside otherwise difficult to access multi-core or multi-hole MOFs now becomes entirely feasible and practical. The formation of a permanent second-order nonlinearity is unequivocally demonstrated by realizing quasi-phase-matched frequency doublers using periodic UV erasure methods in the induction-poled fibers. The second-order susceptibility created inside the fiber is driven by the potential difference established between the floating electrodes, which we calculate via numerical simulations.