What is PON?
Passive Optical Network (PON) is a fiber-optic access technology that uses unpowered splitters to serve multiple customers from a single fiber. It's the dominant technology for Fiber to the Home (FTTH) deployments worldwide.
GPON (Gigabit PON)
Standards
- ITU-T G.984: Core GPON standard
- ITU-T G.988: ONU management (OMCI)
- XGS-PON (G.9807): 10G symmetrical upgrade
Technical Specs
| Parameter | GPON | XGS-PON |
|---|---|---|
| Downstream | 2.488 Gbps | 9.953 Gbps |
| Upstream | 1.244 Gbps | 9.953 Gbps |
| Split ratio | 1:64 (max 1:128) | 1:128 |
| Reach | 20km | 20km |
| Wavelength (down) | 1490nm | 1577nm |
| Wavelength (up) | 1310nm | 1270nm |
Strengths
- Higher efficiency: GEM framing is more efficient than Ethernet
- Better QoS: TDM-based bandwidth allocation, guaranteed performance
- Stronger ecosystem: More vendors, mature equipment
- AES encryption: Built-in security at physical layer
EPON (Ethernet PON)
Standards
- IEEE 802.3ah: Original EPON
- IEEE 802.3av: 10G-EPON
Technical Specs
| Parameter | EPON | 10G-EPON |
|---|---|---|
| Downstream | 1.25 Gbps | 10.3125 Gbps |
| Upstream | 1.25 Gbps | 10.3125 Gbps |
| Split ratio | 1:32 (max 1:64) | 1:128 |
| Reach | 20km | 20km |
| Wavelength | 1490/1310nm | 1577/1270nm |
Strengths
- Ethernet native: No protocol conversion needed
- Lower cost: Simpler chipset design
- Simpler management: Standard SNMP, no OMCI learning curve
- Strong in Asia: Dominant in China, Japan, Korea
GPON vs EPON: Decision Matrix
| Factor | Choose GPON | Choose EPON |
|---|---|---|
| Primary market | Global, especially Europe/Middle East | Asia-Pacific, some US |
| Management complexity | OMCI learning curve | Standard SNMP |
| QoS requirements | Strict SLA, VoIP priority | Best-effort acceptable |
| Vendor ecosystem | Cisco, Nokia, Huawei, ZTE | Huawei, ZTE, FiberHome |
| Upgrade path | XGS-PON, NG-PON2 | 10G-EPON, 25G-EPON |
| Cost sensitivity | Willing to pay for features | Budget-constrained |
Migration and Coexistence
Modern OLTs support combo PON — GPON and XGS-PON on the same port via WDM. This allows:
- Gradual migration from GPON to XGS-PON
- Serving both legacy and premium customers
- Maximizing existing fiber infrastructure
BHL Networks PON Solutions
We offer both GPON and EPON solutions:
- OLT: 4 to 16 PON ports, combo GPON/XGS-PON options
- ONU/ONT: Bridge, WiFi 5, WiFi 6, and XGS-PON models
- Splitters: 1:8, 1:16, 1:32, 1:64 PLC splitters
- Management: OMCI, TR-069, SNMP support
- Compliance: ITU-T G.984/G.988 and IEEE 802.3ah/802.3av
All equipment tested for interoperability with major OLT vendors.