| 摘要 |
A light modulation device includes: an input terminal into which a modulation signal is input; a light modulation element including an anode connected to the input terminal and a cathode that is grounded; a matching resistor connected in parallel with the light modulation element; a matching capacitor connected to the light modulation element and connected in series to the matching resistor; and a protective resistor connected in parallel with the light modulation element, the matching resistor, and the matching capacitor.
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