GPON SFP Optical Transceivers (OLT & ONU)
Build robust and high-speed Fiber-to-the-Home (FTTH) networks with our comprehensive line of GPON (Gigabit-capable Passive Optical Network) transceivers. Fully compliant with the ITU-T G.984.2 standard, these modules are the backbone of modern broadband access, delivering asymmetric speeds of 2.488 Gbps Downstream and 1.244 Gbps Upstream.
Our GPON category includes high-power OLT SFP modules for central office equipment and versatile ONU SFP Sticks for customer premises equipment, ensuring seamless connectivity and high-density splitting capability.
Understanding GPON Classes (B+, C+, C++)
The most critical specification for a GPON OLT transceiver is its “Class,” which defines the optical power budget and, consequently, the maximum split ratio and distance. We offer all three major classes:
| Class | Tx Power (Typical) | Rx Sensitivity | Link Budget | Recommended Split |
|---|---|---|---|---|
| Class B+ | +1.5 to +5 dBm | -28 dBm | ~28 dB | 1:32 or 1:64 |
| Class C+ | +3 to +7 dBm | -30 dBm | ~32 dB | 1:64 or 1:128 |
| Class C++ | +6 to +10 dBm | -32 dBm | ~35 dB | 1:128 (Long Reach) |
Product Types in This Category
1. GPON OLT SFP Modules
Designed for the OLT (Optical Line Terminal) chassis, these modules transmit data to subscribers.
Key Features:
• Tx Wavelength: 1490nm (DFB Laser)
• Rx Wavelength: 1310nm (APD/TIA Burst Mode)
• Connector: SC/UPC (Standard)
• Digital Diagnostic Monitoring (DDM): Included for real-time monitoring of voltage, temperature, and optical power.
2. GPON ONU SFP (GPON Stick)
A “GPON Stick” is a complete ONU (Optical Network Unit) inside an SFP form factor. It can be plugged into a standard SFP port on a router, switch, or firewall, converting that port into a GPON WAN interface.
Key Features:
• Tx Wavelength: 1310nm
• Rx Wavelength: 1490nm
• Functionality: Replaces a standalone ONU box (modem).
GPON vs. EPON: What is the Difference?
While both are 1G-class technologies, GPON offers higher efficiency and bandwidth than EPON (GEPON).
- Bandwidth: GPON provides 2.5 Gbps downstream (vs. 1.25 Gbps for EPON).
- Efficiency: GPON uses GEM encapsulation, which is more efficient (approx 93%) compared to EPON’s Ethernet encapsulation for voice and video traffic.
- Split Ratio: GPON typically supports higher split ratios (up to 1:128) compared to EPON (typically 1:32 or 1:64).
Applications
- FTTH (Fiber to the Home): Delivering Triple Play services (Data, Voice, IPTV).
- FTTB (Fiber to the Building): Connecting MDU (Multi-Dwelling Unit) basements.
- Passive Optical LAN (POL): Enterprise campus networking replacing copper switching.
