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Microwave characteristics of a LiNbO_3 optical modulator employing superconductor electrodes (Nb) as a transmission line of a traveling signal has been studied experimentally in the temperature range ...from 300K to 4.2K. In the frequency range between dc and 26.5GHz it is shown that the obtained modulation depth is in good agreement with the theoretically expected one. The present results demonstrate the possible applications of superconducting electrodes to high performance LiNbO_3 optical modulators.続きを見る
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