Photoelectric conversion module with cooling function

A photoelectric conversion module with a cooling function, comprising:

• a device adapted to transmit or to receive an optical signal;
• a stem to fix the device adapted to transmit or to receive an optical signal;
• a cap to cover the device adapted to transmit or to receive an optical signal;
• a lead to apply an electrical signal to the device adapted to transmit or to receive an optical signal or to transmit an electrical signal from the device adapted to transmit or to receive an optical signal, and
• a heat releasing device disposed on the stem,
• wherein the heat releasing device comprises:
• a peltiert element;
• a thermal conduction member for heat absorption disposed on one side of the peltiert element;
• and
• a thermal conduction member for heat release disposed on another side of the peltiert element,
• wherein the device adapted to transmit or to receive an optical signal is disposed on a side surface of the thermal conduction member for heat absorption through a sub-mount.