| 摘要 |
<P>PROBLEM TO BE SOLVED: To obtain an optical modulation device in which deterioration of high-frequency characteristic is prevented, power consumption is reduced, and a failure of an optical modulation element is prevented. <P>SOLUTION: A modulation signal is input to an input terminal IN. An anode of the optical modulation element 10 is connected to the input terminal IN, and a cathode of the optical modulation element 10 is grounded. A matching resistor R1 and matching capacitor C1 are connected in parallel to the optical modulation element 10. The matching capacitor C1 is connected to the matching resistor R1 in series. A protection resistor R2 is connected in parallel to the optical modulation element 10, the matching resistor R1, and the matching capacitor C1. <P>COPYRIGHT: (C)2012,JPO&INPIT |
