What are the differences between GPON&XG-PON&XGS-PON?
Gpon is a passive optical network (PON) access technology based on the ITU-T G.984.x standard. XG-PON and XGS-PON are the next generation 10G GPON that belongs to the evolution of GPON.XGS-PON, XG-PON and GPON are three types of passive optical network (PON) access technology. Pls check their different among of them as below:
1.What is GPON?
G stands for Gigabit,PON stands for passive optical network.GPON means a one Gigabit PON.
GPON technology is the latest generation broadband passive optical integrated access standard based on the ITU-TG.984.x standard.
The maximum rate of downlink is 2.5Gbps, and the maximum rate of uplink is 1.25 Gbps.
The upstream wavelength of GPON is 1310 nm, and the downstream wavelength is 1490 nm.
The maximum splitting ratio is 1:128.
2.What is XG–PON?
X stands for 10.X-GPON is a 10G GPON, which belongs to the GPON series.
The maximum rate of downlink is 10 Gbps, and the maximum rate of uplink is 2.5 Gbps.
The upstream wavelength of XG-PON is 1270 nm and the downstream wavelength is 1577 nm.
The maximum splitting ratio is 1:256.
3.What is XGS–PON?
S stands for Symmetry.XGS-PON means a 10 Gigabit Symmetric PON.
XGS-PON also belongs to the GPON series. XGS-PON is the technological evolution of XG-PON.
XGS-PON is a symmetric PON.
The maximum rate of downlink is 10Gbps, and the maximum rate of uplink is also 10 Gbps
The upstream wavelength of XG-PON is 1270 nm and the downstream wavelength is 1577 nm
The maximum splitting ratio is 1:256.
4.GPON vs XG–PON vs XGS–PON
| PON type | GPON | XG PON | XGS PON |
| maximum rate of uplink | 1.25 Gbps | 2.5 Gbps | 10 Gbps |
| maximum rate of downlink | 2.5 Gbps | 10 Gbps | 10 Gbps |
| upstream wavelength | 1310 nm | 1270 nm | 1270 nm |
| downstream wavelength | 1490 nm | 1577 nm | 1577 nm |
| maximum splitting ratio | 1:128 | 1:256 | 1:256 |
| Transmission Distance | 60km | 100km | 100km |
5.How is XGS–PON OLT Compatible With GPON And XG–PON ONU?
5.1XGS–PON vs GPON – Compatible between OLT and ONU
XGS-PON OLT can be connected to GPON ONU through the Combo solution.
The Combo optical module of XGS-PON integrates WDM combiner, GPON optical module, XGS-PON optical module.
In the upstream direction, after the optical signal enters the Combo port, WDM filters the XGS-PON and GPON signal according to the wavelength, and afterward sends the signal to different ONU.
So XGS-PON supports access of GPON, XG-PON and XGS-PON three types of ONU.
5.2 XGS–PON vs XG–PON – Compatible between OLT and ONU
Since the downstream wavelength and downstream rate of XG-PON and XGS-PON are the same, the downstream of XGS-PON does not distinguish between XG-PON ONU and XGS-PON ONU, and each ONU chooses to discards other signals and receive its own signal.
Hope this article can help you find more differences between different PONS. If you want to know more details about GPON/XG-PON/XGS-PON products, please contact to our sales team.