The optical module is a conversion device for photoelectric signals and needs to be plugged into the equipment for use. Both electrical and optical signals are magnetic wave signals. The transmission range of electrical signals is limited, while optical signals can be transmitted faster and farther. However, some current devices recognize electrical signals, so there are photoelectric conversion modules. , The optical module is used to convert the electrical signal into an optical signal at the transmitting end. After transmitting through the optical fiber, the receiving end converts the optical signal into an electrical signal.