Optical communication module including optical-electrical signal converters and optical signal generators

An optical communication module, comprising:

• a substrate comprising a first surface and an opposite second surface, the substrate defining a plurality of through holes passing through the first surface and the second surface;
• an optical signal receiving unit comprising at least one optical-electrical signal converter for converting optical signals into corresponding electrical signals, each of the at least one optical-electrical signal converter being mounted on the first surface and aligned with a corresponding one of the through holes;
• an optical signal emitting unit comprising at least one optical signal generator for generating optical signals, each of the at least one optical signal generator being mounted on the first surface and aligned with a corresponding one of the through holes;
• and
• a coupler comprising a plurality of coupling lenses, the coupler being mounted on the second surface of the substrate, and each of the at least one optical-electrical signal converter and the at least one optical signal generator being aligned with a corresponding one of the coupling lenses through the corresponding through hole.