What are the applications and features of GPON?

GPON Applications
  GPON-related terminal products are largely similar to EPON, with three main application scenarios:
  (1) FTTH/FTTO-type terminals targeting high-end and commercial users, generally referred to as SFU/SBU-type ONUs. The downstream PON fiber passes through a splitter and connects directly to the user's ONU, with one ONU serving a single user. User data services are uplinked via FE or GE ports, offering high security but at a higher cost, typically for premium and business users.
  (2) FTTB-type terminals targeting concentrated new residential communities or mid-to-high-end residential areas, generally referred to as MDU (LAN)-type ONUs. Typically, several to dozens of households share one ONU terminal, with user data services uplinked via FE ports, providing relatively high access bandwidth.
  (3) FTTC-type terminals targeting concentrated mid-to-low-end residential areas and industrial parks, generally referred to as MDU (DSL)-type ONUs. Typically, dozens to hundreds of households share one ONU terminal, with user data services uplinked over copper cables, providing ADSL/ADSL2+ access rates.

GPON Features

    1. High bandwidth and high transmission efficiency: downstream rates up to 2.488 Gbit/s and upstream rates of 1.244 Gbit/s, meeting operators' future service access bandwidth requirements. With GEM encapsulation, overall transmission efficiency exceeds 93%.
    2. Single-fiber access: a single optical fiber can meet the access requirements of ONU users, significantly saving operators' fiber resources in the feeder segment of the access layer.
    3. Supports longer access distances (greater than 20 km). For [FTTB](
    4. As a carrier-grade technical standard, it specifies detailed requirements for equipment interoperability and provides corresponding QoS guarantees for various service types. GPON also defines protection mechanisms at the access network level and comprehensive OAM functions, with optical fiber automatic switching time of less than 50 ms.
    5. The outdoor optical distribution network contains only optical fibers and passive splitters with highly stable physical medium characteristics, with no active equipment, ensuring high network reliability.
    6. Provides a unified access platform at the access network level, reducing operators' maintenance and troubleshooting costs.