De Lucia Francesco, Sazio Pier J A
Optoelectronics Research Centre, University of Southampton, Southampton SO17 1BJ, UK.
Micromachines (Basel). 2020 Jan 27;11(2):139. doi: 10.3390/mi11020139.
This review gives a perspective of the thermal poling technique throughout its chronological evolution, starting in the early 1990s when the first observation of the permanent creation of a second order non-linearity inside a bulk piece of glass was reported. We then discuss a number of significant developments in this field, focusing particular attention on working principles, numerical analysis and theoretical advances in thermal poling of optical fibers, and conclude with the most recent studies and publications by the authors. Our latest works show how in principle, optical fibers of any geometry (conventional step-index, solid core microstructured, etc) and of any length can be poled, thus creating an advanced technological platform for the realization of all-fiber quadratic non-linear photonics.
本综述从时间发展的角度介绍了热极化技术，始于20世纪90年代初，当时首次报道了在大块玻璃内部永久性地产生二阶非线性的观测结果。然后，我们讨论了该领域的一些重大进展，特别关注光纤热极化的工作原理、数值分析和理论进展，并以作者的最新研究和出版物作为总结。我们的最新研究表明，原则上，任何几何形状（传统阶跃折射率、实心芯微结构等）和任何长度的光纤都可以进行极化，从而为实现全光纤二次非线性光子学创建一个先进的技术平台。
