Abstract
A method is put forward to measure the linear electro-optic (EO) coefficient at high frequency using a light-coupled microwave cavity perturbation method of standing wave condition. The method is used to determine the EO coefficient of Sr0.61Ba0.39Nb2O6 (SBN) crystal fiber. The electro-optic coefficient r33 of SBN crystal fiber at 10 GHz is measured to be near 200(pm∕V), which is smaller than that measured at low frequency containing secondary contributions. This method is suitable for measuring the electro-optic property in a wide range of high frequencies depending on the availability of microwave cavity and suitable electronics.
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