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What is PON Technology?

Uploaded2021/9/22 0:00:00     Hits    Source

What is PON Technology?

PON is the abbreviation of Passive Optical Network. It is a very important type of optical fiber access system, occupying a dominant position in the access market. It only uses optical fibers and passive components (such as PON splitters and combiners), and does not use active components such as amplifiers, repeaters, or shaping circuits. According to different PON terminals, the network system can be divided into fiber to the home (FTTH), fiber to the curb (FTTC), fiber to the building (FTTB), etc.

Types of PON


APON is the abbreviation of Asynchronous Transmission Mode Passive Optical Network. APON is the original PON system used for commercial deployment.


GPON is the abbreviation of Broadband Passive Optical Networks. With the rapid development of Ethernet technology, APON is basically no longer used. BPON is an enhancement after the APON standard. PON is based on the ATM protocol, with uplink and downlink speeds of 155 and 622 Mbps respectively. It also adds functions such as dynamic bandwidth allocation and protection, and can provide services such as Ethernet access, video transmission, and high-speed leased lines.


GPON is the abbreviation of Gigabit Passive Optical Networks. GPON supports various transmission rates of the same protocol. The laser with a wavelength of 1490 nm transmits downstream data, while the upstream data is transmitted at a wavelength of 1310 nm. The maximum downlink data rate is 2.5 Gbps, and the maximum uplink data rate is 1.25 Gbps.


EPON is the abbreviation of Ethernet Passive Optical Networks. EPON technology provides a bidirectional 1 GB/s link. The downlink uses a 1490nm wavelength, and the uplink uses a 1310nm wavelength. The 1550nm wavelength is reserved for future expansion or additional services. The original line data rate in both the upstream and downstream directions is 1.25 GB/s. With the advantages of scalability, simplicity, multicast convenience, and full-service access capabilities, EPON is used in networks in many regions of Asia.

Advantages of PON

They use existing optical fibers, their deployment costs are lower, maintenance is simple, scalability is flexible, and they are easy to upgrade.

The PON network is not susceptible to electromagnetic interference and noise, and can maintain signal integrity.

PON can provide a wide range of services to a large number of users.

Disadvantages of PON

They need extensive fiber deployment.

Due to the amount of management traffic overhead transmitted from the central office to a single customer ONU, larger networks may become less efficient.

PON must comply with strict transmission distance restrictions.


As the demand for faster Internet services and more videos grows, PON is becoming more and more popular. EPON and GPON are currently the most commonly deployed PON systems. PON network is undoubtedly an effective solution for multiple network users. As people have been seeking a higher bandwidth supply, so in the near future, the transmission capacity will be greatly improved.

Baudcom offers all types of PON related products. For more information, please visit Baudcom.

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