GPON has three levels, that is, A B C, each is different in optical index (sending power and receiving power). 5~5dBm, and its receiver sensitivity is -28dBm while the sending power of Class C+ is 3~7dBm and. An optical module is a typically hot-pluggable optical transceiver used in high-bandwidth data communications applications. 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 eSFP module is an SFP module that supports monitoring of voltage, temperature, bias current, transmit optical power, and receive optical power. ▶ 1Gbps optical modules: Common representations. 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. 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.