| 摘要 |
A simple and inexpensive process for diffusion of ions from a melt (4) into an optical waveguide substrate (1), in which the optical waveguide substrate (1) is arranged between two electrodes (2, 3), comprises arranging at least one electrode (2, 3) in the form of a sheet at such a distance from the surface of the optical waveguide substrate (1) that the space between the electrode (2, 3) and the optical waveguide substrate (1) acts as a capillary, then dipping the electrodes (2, 3) with the optical waveguide substrate (1) arranged between them into a melt (4) for a sufficient time that, due to the capillary force, some of the melt (4) has risen to a desired height in the space acting as capillary, and subsequently removing the optical waveguide substrate (1) together with the electrodes (2, 3) from the melt (4) and applying an electric field to the electrode (2, 3) (Fig. 1). <IMAGE>
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