Circuit board assembly having optical transceiver for signal transmission

A circuit board assembly, comprising:

• a circuit board;
• a first optical transceiver electrically connected to the circuit board;
• a first transparent shell mounted on the circuit board and optically coupled with the first optical transceiver;
• a second optical transceiver electrically connected to the circuit board;
• a second transparent shell mounted on the circuit board and optically coupled with the second optical transceiver;
• and
• a plurality of light wave guides arranged between the first transparent shell and the second transparent shell and optically coupled with the first transparent shell and the second transparent shell;
• wherein the first optical transceiver is configured for sending first light signals, the first light signals are transmitted through the first transparent shell, the light wave guides, and the second transparent shell and are received by the second optical transceiver;
• the second optical transceiver is configured for sending second light signals, the second light signals are transmitted through the second transparent shell, the light wave guides, and the first transparent shell and are received by the first optical transceiver;
• wherein the first optical transceiver comprises a first light emitting module and a first light receiving module, the first light emitting module comprises two first laser diodes and a first laser driver electrically connected to the first laser diodes;
• the first light receiving module comprises two first photo diodes and a first photoelectric converter electrically connected to the first photo diodes.