Time Evolution of Electro-optic Effect in Fibre During Thermal Poling

Poled silica fibre with electro-optic effect expands the photonic functionality of the fibre. The understanding of its origin, however, is in a similar way to that of fibre Bragg grating formation, still not very clear. More experimental data is needed in order to clarify the process. In this paper, we present the measurement of the time evolution of the electro-optic effect in silica fibre during thermal poling. The new observation suggests that the current model of thermal poling of silica glass need to be modified.