Polling 된 실리카유리의 2차 비선형 광특성에 대한 전산모사 해석

Abstract

silica glass is a core material for optical fiver in optical telecommunications, but its centrosymmetry eliminates the second order nonlinearity. But it is experimentally well known that the space charge polarization induces the Second Harmonic Generation (SHG) when a strong DC voltage is applied the silica glass for a long period time with metal blocking electrodes. In this reaserch, a theoretical calculation of the nonlinear optical property caused by the space charge polarization os performed, and a model of a numerical analysis to predict the small change in nonlinear optical property as functions of time and space is provided.