Improved Stability Of Ti:LiNbO3 Devices By Using ITO Electrodes

M. Kowalsky; A. Neyer; W. Mevenkamp; F. Rottmann; T. Pohlmann; E. Voges

doi:10.1117/12.961922

6 December 1989 Improved Stability Of Ti:LiNbO₃ Devices By Using ITO Electrodes

M. Kowalsky, A. Neyer, W. Mevenkamp, F. Rottmann, T. Pohlmann, E. Voges

Proceedings Volume 1141, 5th European Conf on Integrated Optics: ECIO '89; (1989) https://doi.org/10.1117/12.961922
Event: 1989 International Congress on Optical Science and Engineering, 1989, Paris, France

Abstract

DC-stability is one of the most serious problems in Titanium diffused LiNbO3 devices leading to a temporal change of the output power of optical modulators and switches. In this contribution the influence of Indium-Tin-Oxide (ITO) electrodes on the long term (hours) dc stability of Ti:LiNb01 devices is investigated in comparison with metal (aluminium) electrodes directly deposited on the LiNb03. The technology of the ITO-electrodes is described. Interferometric Ti:LiNb03 switches on x-cut substrates have been used as test devices. The drift was characterized by tracing the drive point voltage as a function of time and applied dc bias. Our main result is that the interferometers with aluminium electrodes showed a voltage drift of the operation point of > 10 % over a time period of several hours, whereas the devices with ITO-electrodes only showed a slight initial drift and remained stable afterwords.

Citation Download Citation

M. Kowalsky, A. Neyer, W. Mevenkamp, F. Rottmann, T. Pohlmann, and E. Voges "Improved Stability Of Ti:LiNbO₃ Devices By Using ITO Electrodes", Proc. SPIE 1141, 5th European Conf on Integrated Optics: ECIO '89, (6 December 1989); https://doi.org/10.1117/12.961922

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