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Demonstrates data modulation capabilities in plasmonic modulators, suggesting high-performance applications.
We report on high-extinction-ratio, ultrafast plasmonic Mach-Zehnder modulators. We demonstrate data modulation at line rates up to 72 Gbit/s (BPSK) and 108 Gbit/s (4-ASK). The driving voltages are Ud= 4 and 2.5 Vpfor 12.5 and 25 μm short devices, respectively. The frequency response shows no bandwidth limitations up to 70 GHz. Static characterizations indicate extinction ratios > 25 dB.
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Heni et al. (2015) studied this question.
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