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Ultraviolet electro-optic amplitude modulation in waveguides
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Image of FIG. 1.
FIG. 1.

Configuration for the EO amplitude waveguide modulator: the light is propagating along axis, the polarization is tilted 45° to the axis, and the electric field is applied through the electrodes along the axis.

Image of FIG. 2.
FIG. 2.

Comparison between the calculated (a) and measured (b) intensity profiles of the TM mode at .

Image of FIG. 3.
FIG. 3.

Comparison between calculated ◻ and measured ◆ mode profiles at (a) along the direction and (b) along the direction extracted from the intensity contours shown in Fig. 2.

Image of FIG. 4.
FIG. 4.

Comparison between the measured half-wave voltage in different modulators at different wavelengths: the ∎ points represent the output values measured at in a -long modulator with electrode spacing; the ▵ points are the values measured at in a -long modulator with electrode spacing. In the same modulator, the values measured at are given by the ☉ points.


Generic image for table
Table I.

Wavelength dependence in the blue-UV range of electro-optic coefficient , refractive index , reduced half-wave voltage , and comparison between experimental and theoretical for different waveguide modulators with electrode spacing and total length . The values at 373 and were measured in an EO modulator implanted with fluence, while the value at was measured in the modulator implanted with fluence.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Ultraviolet electro-optic amplitude modulation in β-BaB2O4 waveguides