PON moudle are high-performance optical moudles compliant with the ITU-T G984.2 standard, primarily used in PON systems. They transmit and receive signals between the Optical Line Terminal and Optical Network Terminal using different wavelengths. PON networks mainly consist of OLT, ONU, and passive optical splitters, featuring efficient data transmission capabilities and flexible network architecture. Types of PON modules include GPON, EPON, XG-PON, etc., catering to different network requirements.