Optical module

An optical module, comprising:

• a circuit board;
• and
• an optical modulation chip, electrically connected to the circuit board, and the optical modulation chip comprising:
• a first substrate, comprising a first groove;
• an optical modulator, disposed on a surface of the first substrate and configured to modulate light to be modulated based on an electrical signal;
• a second coupling waveguide, disposed on one side of the optical modulator and configured to transmit the light to be modulated to the optical modulator;
• a modulation driver, disposed on the other side of the optical modulator, electrically connected to the optical modulator, and configured to process the electrical signal;
• a transimpedance amplifier, disposed on the surface of the first substrate;
• a second substrate, at least partially embedded in the first groove;
• an optical demodulator, disposed on the second substrate, wrapped by the first groove, and configured to demodulate an optical signal, wherein the optical demodulator is disposed on one side of the transimpedance amplifier and electrically connected to the transimpedance amplifier;
• and
• a first coupling waveguide, disposed on one side of the optical demodulator, optically connected to the second coupling waveguide, and configured to transmit the light to be modulated to the second coupling waveguide,
• wherein a first via is formed through the first substrate in a direction from an end of the optical demodulator toward the circuit board to electrically connect the optical demodulator to the circuit board;
• a second via is formed through the first substrate in a direction from a bottom surface of the transimpedance amplifier toward the circuit board to electrically connect the transimpedance amplifier to the circuit board;
• and
• the first via and the second via are electrically connected through a trace in the circuit board.