Martin M, Videau J J, Canioni L, Adamietz F, Sarger L, Le Flem G
Centre de Physique MoléculaireOptique et Hertzienne, Unité de Recherche Associée 283, Centre National de la Recherche Scientifique, Université de Bordeaux I, 351 Cours de la Libération, 33405 Talence Cedex, France
Appl Opt. 2000 Jan 20;39(3):435-40. doi: 10.1364/ao.39.000435.
All-optical communication systems are the subject of intense research related to the integration of nonlinear optical materials. In sodiocalcic borophosphate glasses that contain niobium oxide and exhibit high nonlinear optical indices, planar waveguides have been formed by a Ag(+)-Na(+) ion-exchange technique. WKB analysis has been used to characterize the diffusion profiles of silver ions exchanged in glass substrate samples chemically by an electron microprobe technique and optically by an M-line technique. These methods permit the Ag(+) penetration depth and diffusion profile shape and index profiles to be determined. The results are analyzed and discussed in relation to Ca(2+) concentration and exchange conditions in glasses. The Ag(+) diffusion in these glasses can be almost entirely controlled for index-profile engineering.
全光通信系统是与非线性光学材料集成相关的深入研究课题。在含有氧化铌且具有高非线性光学指数的钠钙硼磷酸盐玻璃中，通过Ag(+)-Na(+)离子交换技术形成了平面波导。利用WKB分析通过电子微探针技术对化学交换到玻璃衬底样品中的银离子扩散分布进行表征，并通过M线技术进行光学表征。这些方法可以确定Ag(+)的渗透深度、扩散分布形状和折射率分布。结合玻璃中的Ca(2+)浓度和交换条件对结果进行了分析和讨论。在这些玻璃中，Ag(+)的扩散几乎可以完全控制以用于折射率分布工程。
