Effect of core–cladding interface on thermal poling of germano-silicate optical waveguides

Faccio, D. , Busacca, A., Harwood, D.W.J., Bonfrate, G., Pruneri, V. and Kazansky, P.G. (2001) Effect of core–cladding interface on thermal poling of germano-silicate optical waveguides. Optics Communications, 196(1-6), pp. 187-190. (doi: 10.1016/S0030-4018(01)01385-2)

Abstract

We report on the effect of the interface between silica and germano-silicate glass during thermal poling of optical waveguides. By measuring the depth of the nonlinear region, using the Maker's fringes technique combined with etching in hydrofluoric acid, we conclude that the germania-doped layer acts as a barrier for the migration of cations at standard poling temperature and voltage. It is also found that the problem can be circumvented by poling at higher temperature and voltage, e.g. 320°C and 8 kV.

• Item Type: Articles
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Faccio, Professor Daniele
• Authors: Faccio, D., Busacca, A., Harwood, D.W.J., Bonfrate, G., Pruneri, V., and Kazansky, P.G.
• College/School: College of Science and Engineering > School of Physics and Astronomy
• Journal Name: Optics Communications
• Publisher: Elsevier
• ISSN: 0030-4018
• ISSN (Online): 1873-0310