Function of the optical module board

The optical module serves as a crucial component in optical fiber communication systems, operating at the physical layer, which is the lowest layer in the OSI model. Optical modules typically have an electrical interface on the side that connects to the inside of the system and an optical interface on the side that connects to the outside. An optical module PCB (Printed Circuit Board) is a board that is used in optical modules for communication purposes. Its primary function is to achieve optoelectronic conversion by converting electrical signals into optical signals and vice versa. [pdf]