"PON网络技术原理概述：无源光网络结构及GPON原理"

Passive Optical Network (PON) technology is a type of optical network that consists of an Optical Line Terminal (OLT), Optical Network Units (ONU), and an Optical Distribution Network (ODN). PON is a point-to-multipoint (P2MP) structure that allows for the transmission of data from a central OLT to multiple ONUs without the need for active components such as repeaters or switches. The key components of a PON system include the OLT, which serves as the central hub for data transmission, the ONU, which is the endpoint device that connects to the user's premises, and the ODN, which distributes the optical signal to multiple ONUs. A Passive Optical Splitter is used in the ODN to divide the optical signal into multiple streams for distribution to different ONUs. GPON (Gigabit Passive Optical Network) is a type of PON system that utilizes WDM (Wavelength Division Multiplexing) technology to achieve single-fiber bidirectional transmission. This allows for efficient data multiplexing and demultiplexing to separate the signals from multiple users sharing the same optical fiber. Overall, PON technology offers a cost-effective and scalable solution for delivering high-speed broadband services to a large number of users. With its passive infrastructure and efficient data transmission capabilities, PON networks are ideal for providing reliable and high-performance connectivity in various applications such as telecommunication, internet services, and cable television.