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Schematic diagram of the strip-loaded electro-optic waveguide modulator structure. The ellipsoid schematically indicates the location of coupling light beam and the waveguide mode shape.
Electro-optic modulator performance at a wavelength of . (a) Applied triangle-driving voltages on -long electrodes (top trace, ) and modulation output signal (bottom trace, ). (b) Dependence of effective electro-optic coefficient and half-wave voltage-interaction length product, , on dc bias voltage.
Half-wave voltage as a function of input polarization angle for dc bias at 0, 5, 10, 25 and , respectively. Polarization-independent modulation is observed for dc bias of 25 and . The insert shows the input light polarization relative to the axis of the modulator.
Temperature dependence of the half-wave voltage. The coincidence of the open squares (increasing temperature) and closed circles (decreasing temperature) shows no thermal hysteresis or EO degradation is evident.
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