Higher output power indicates stronger signal transmission capabilities and longer transmission distances, while higher receive sensitivity enhances the module's ability to detect weak light signals, improving the system's interference resistance. The Transmitter Optical Sub Assembly (TOSA) is responsible for the emission of light. Its primary function entails converting electrical signals into optical signals. This assembly comprises a light source, such as a laser diode or a semiconductor light-emitting diode (LED), an optical interface, a. What is the power of a light pulse? The power of an optical pulse varies with time (for ultrashort pulses, within femtoseconds); its maximum is called the peak power. Particularly for a regular pulse train with a high pulse. Average optical power refers to the optical power outputted by the optical module's transmitter under normal working conditions, which can be understood as the intensity of light. The transmitted optical power is related to the proportion of "1"s in the transmitted data signal; the more "1"s, the. Overload optical power, also known as saturated optical power, refers to the maximum input average optical power that the receiving end components can receive under a certain bit error rate of the optical module.