Electro-optic amplitude modulation using three-dimensional LiNbO3 waveguide fabricated by TiO2 diffusion
- 1 July 1975
- journal article
- conference paper
- Published by AIP Publishing in Applied Physics Letters
- Vol. 27 (1) , 19-21
- https://doi.org/10.1063/1.88271
Abstract
An almost single‐mode waveguiding layer has been fabricated by thermal diffusion of TiO2 into LiNbO3. The refractive‐index change in the layer is 2–3×10−3 for both ne and no, and the propagation loss is 0.7–0.8 dB/cm. The electro‐optic coefficients are found to be nearly equal to those of the bulk crystal. An amplitude modulation has been made with a stripe waveguide 10 μm wide and planar electrodes. The half‐wave voltage is 17 V and the maximum extinction ratio is 12 dB.Keywords
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