Optical transceiver assembly with integrated amplifier and transmitter driver on a flexible circuit

An assembly, comprising:

• a flexible circuit assembly including:
• a flexible circuit comprising an insulating base material and a conductor material, wherein the flexible circuit includes first and second opposite ends;
• a first alignment hole and a second alignment hole closer to the first end than they are to the second end;
• a fiber optic transmitter and a fiber optic receiver on the flexible circuit closer to the first end than they are to the second end;
• and
• a driver die and an amplifier die connected to the flexible circuit, the driver die and the amplifier die are disposed between the alignment holes and the second end, and
• the fiber optic transmitter and the fiber optic receiver are separate from the driver die and the amplifier die, the fiber optic transmitter and the fiber optic receiver are disposed between the driver and amplifier dies and the first end, and the driver and amplifier dies are disposed between the fiber optic transmitter and the fiber optic receiver and the second end;
• and
• a thermal heat sink connected with the driver die and the amplifier die.

An assembly, comprising:

• a flexible circuit assembly including:
• a flexible circuit, wherein the flexible circuit includes first and second opposite ends;
• a first alignment hole and a second alignment hole adjacent the first end;
• and
• a driver die and an amplifier die connected to the flexible circuit, and the driver die and the amplifier die are disposed between the alignment holes and the second end;
• and
• a thermal heat sink connected with the driver die and the amplifier die, wherein the thermal heat sink includes first and second ends, a first major surface, and a second major surface;
• the first major surface includes a recess, and the driver die and amplifier die are disposed in the recess, and the thermal heat sink includes a spring holder at the second end, and the spring holder holds a spring.