Traveling-wave optical modulation device and traveling-wave optical modulator

A traveling-wave optical modulator, comprising:

• a splitter, configured to receive an optical signal and divide the optical signal into a first optical signal and a second optical signal;
• a traveling-wave optical modulation device, connected to the splitter and configured to receive the first optical signal and the second optical signal, and allow the first optical signal and the second optical signal to propagate along a traveling direction, comprising:
• a first electrode;
• a second electrode;
• a first optical waveguide, configured to allow the first optical signal to propagate in the first optical waveguide, wherein two sides are respectively electrically connected to the first electrode and the second electrode;
• a third electrode;
• a fourth electrode;
• a second optical waveguide, configured to allow the second optical signal to propagate in the second optical waveguide, wherein two sides are respectively electrically connected to the third electrode and the fourth electrode;
• and
• a plurality of matching inductors, arranged adjacent to the first optical waveguide or the second optical waveguide sequentially along the traveling direction and respectively electrically connected between the first electrode and the first optical waveguide, between the second electrode and the first optical waveguide, between the third electrode and the second optical waveguide, or between the fourth electrode and the second optical waveguide, wherein inductance values of the matching inductor incrementing along the traveling direction, and the inductance value of a first matching inductor arranged closest to a start of the traveling direction is less than the inductance value of a last matching inductor arranged closest to an end of the traveling direction;
• and
• an optical combiner, connected to the first optical waveguide and the second optical waveguide, and configured to receive the first optical signal and the second optical signal,
• wherein a first voltage is applied between the first electrode and the second electrode to modulate a phase of the first optical signal, and a second voltage is applied between the third electrode and the fourth electrode to modulate a phase of the second optical signal,
• wherein the modulated first optical signal and second optical signal are received by the optical combiner to generate the modulated optical signal.