Abstract
In contrast to conventional voltage sensor technology (e.g., inductive voltagetransformers or capacitive voltage transformers), optical sensors have inherent andadvantageous features, such as wider bandwidth, larger dynamic range and lighter weight.The aim of this work is to implement an AC voltage sensor based on Pockels electro-opticeffect in LiNbO3 crystal. The research has been conducted in two ways .The first way is theinstallation tested uses external electrodes and a He-Ne laser as a light source, whereas thesecond way is by using the direct voltage application to the metalized sides of the LiNbO3crystal built into an optic cell. Results of both tests shows that by using the direct voltageapplication to the metalized sides of the LiNbO3 crystal built into an optic cell led to betterrepeatability of voltage measurements and corresponds to more realistic conditions.
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