Loss and dispersion: These two parameters are mainly used to define the transmission distance of the product, and the optical transmission power and receiving sensitivity of optical modules with different wavelengths, transmission rates and transmission distances will be. Loss and dispersion: These two parameters are mainly used to define the transmission distance of the product, and the optical transmission power and receiving sensitivity of optical modules with different wavelengths, transmission rates and transmission distances will be. Optical modules are crucial for today's communication systems as they convert electrical signals into light signals for rapid data transfer. Understanding their key parameters isn't just technical jargon – it's critical for ensuring compatibility, performance, and reliability in your data center. As an essential component of optical fiber communication, optical modules are optoelectronic devices that facilitate the conversion between optical and electrical signals during the transmission process. These modules convert electrical signals into optical signals for transmission and then convert. An eSFP module is an SFP module that supports monitoring of voltage, temperature, bias current, transmit optical power, and receive optical power. Therefore, eSFP is also called SFP sometimes.