Optical-module member, optical module, and electronic device

An optical-module member, comprising:

• an optical waveguide;
• a light-emitting unit substrate including
• a first insulating substrate,
• a plurality of light-emitting element-mounting portions positioned on the first insulating substrate to mount a plurality of light-emitting elements to be optically connected to the optical waveguide, and
• a plurality of driving element-mounting portions electrically connected to the light-emitting element-mounting portions and positioned on the first insulating substrate to mount a plurality of driving elements for driving the light-emitting elements;
• and
• a light-receiving unit substrate which is separated from the light-emitting unit substrate, the light-receiving unit substrate including
• a second insulating substrate,
• a plurality of light-receiving element-mounting portions positioned on the second insulating substrate to mount a plurality of light-receiving elements to be optically connected to the optical waveguide, and
• a plurality of signal amplification element-mounting portions electrically connected to the light-receiving element-mounting portions and positioned on the second insulating substrate to mount a plurality of signal amplification elements for amplifying a signal from the light-receiving element.