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High-Mobility Transparent Conducting Oxides for Compact Epsilon-Near-Zero Silicon Photonic Phase Modulators

Wood, Michael G.; Reines, Isak C.; Luk, Ting S.; Serkland, Darwin K.; Campione, Salvatore

We numerically analyze the role of carrier mobility in transparent conducting oxides in epsilon-near-zero phase modulators. High-mobility materials such as cadmium oxide enable compact photonic phase modulators with a modulation figure of merit > 29-{\circ}/\mathrm{dB}.