Optical Modulation Module and Optical Transmitter

Abstract

Provided are an optical transmitter that improve a signal path between the optical modulation module and a substrate, prevent deterioration of a modulated signal, and can obtain a signal in a wide frequency band. An optical transmitter of the present disclosure includes an optical modulation light source chip, an RF wiring substrate connected to the optical modulation light source chip, and an RF connection substrate having a metal bump connecting the optical modulation light source chip and the RF wiring substrate. The optical modulation light source chip is configured to include a semiconductor substrate, a semiconductor layer, a wiring layer connected to the semiconductor substrate and in contact with the metal bump, and a wiring layer connected to the semiconductor layer and in contact with the metal bump.

Dependencies are inferred from the claim text.