With the continuous improvement of high-speed network construction and the need to build a digital smart life based on the “three gigabit” network capabilities, operators need longer transmission distances, higher bandwidths, stronger reliability and lower business operations Expenses (OPEX), and GPON supports multiple functions to meet customer needs.
What is GPON?
GPON is the abbreviation of Gigabit Passive Optical Network, defined by the ITU-T recommendation series G.984.1 to G.984.6. GPON can transmit not only Ethernet, but also ATM and TDM (PSTN, ISDN, E1 and E3) traffic. Its main feature is the use of passive splitters in the optical fiber distribution network,with a point-to-multipoint access mechanism, to use one incoming optical fiber from the central location of the network provider to serve multiple households and small business users.
GPON, EPON and BPON
EPON (Ethernet Passive Optical Network) and GPON have very similar meanings. They are both PON networks and both use optical cables and the same optical frequency.The rate of these two networks in the upstream direction is approximately 1.25 Gbits/s. And BPON (Broadband Passive Optical Network) and GPON are also very similar. They both use optical fibers and can provide services for 16 to 32 users. The BPON specification follows ITU-T G983.1, and GPON follows ITU-T G984.1. When PON applications began to be introduced, BPON was the most popular.
GPON is very popular in the optical fiber market. In addition to its advanced technology, it also has the following advantages:
1.Range: Single-mode fiber can transmit data from 10 to 20 kilometers, while conventional copper cables are usually limited to a range of 100 meters.
2.Speed: The downstream transmission rate of EPON is the same as its upstream rate, which is 1.25 Gbit/s, while the downstream transmission rate of GPON is 2.48 Gbit/s.
3.Security: Due to the isolation of signals in the optical fiber, GPON is essentially a safe system. Because they are transmitted in a closed circuit and contain encryption, GPON cannot be hacked or tapped.
4.Affordability: GPON fiber optic cables are cheaper than copper LAN cables, and can also avoid investment in wiring and related electronic equipment, thereby saving costs.
5.Energy saving: Contrary to the standard copper wire in most networks, the energy efficiency of GPON is increased by 95%. In addition to efficiency, gigabit passive optical networks also provide a low-cost solution that can increase users through splitters, which is very popular in densely populated areas.