XGS-PON OLT XFP Transceiver N2 Class | 10G/2.5G & 10G/10G | ITU-T G.9807.1

Overview

Empower your fiber optic access network with the XGS-PON OLT XFP N2 Transceiver, a high-performance optical module designed for the service provider central office. This robust transceiver serves as the “headend” interface in Passive Optical Networks (PON), enabling Internet Service Providers (ISPs) to deliver ultra-fast broadband services to multiple subscribers over a single fiber strand. Compliant with the ITU-T G.9807.1 standard, it offers the flexibility to support both symmetrical 10G/10G (XGS-PON) and asymmetrical 10G/2.5G (XG-PON) transmission modes.

In practice, network operators rely on the N2 Class optical budget provided by this module to overcome split ratios of up to 1:64 or even higher, depending on the fiber plant quality. By utilizing an industry-standard XFP form factor, this 10G OLT module plugs directly into OLT chassis line cards, transmitting high-power downstream signals at 1577nm while simultaneously receiving upstream burst-mode traffic at 1270nm. This capability allows for seamless coexistence with legacy GPON networks, facilitating a smooth migration path to next-generation fiber speeds.

Key Features

• Dual-Mode Operation: Supports both XGS-PON (9.953Gbps/9.953Gbps) and XG-PON (9.953Gbps/2.488Gbps) rates.
• High Optical Budget: N2 Class compliant, offering superior transmit power (+4 to +7 dBm) for extended reach.
• Burst-Mode Receiver: Advanced APD receiver technology handles burst traffic from multiple ONUs with high sensitivity.
• Standard Wavelengths: Transmits downstream at 1577nm and receives upstream at 1270nm.
• Form Factor: Hot-pluggable XFP footprint with a Simplex SC/UPC connector interface.
• Intelligent Diagnostics: Full Digital Diagnostic Monitoring (DDM) interface for tracking voltage, laser bias, and temperature.

Applications

The XGS-PON OLT transceiver is the cornerstone of modern FTTx deployments. It is primarily installed in Optical Line Terminal (OLT) chassis located in central offices or remote cabinets. From there, it drives the Passive Optical Network, connecting to hundreds of residential homes (FTTH), apartment complexes (FTTB), or enterprise buildings (FTTP). Additionally, its high bandwidth and low latency make it an excellent choice for 5G “xHaul” transport, where it connects small cell sites back to the core network efficiently.

Specifications

Advantages

Deployment of our XFP XGS-PON OLT module brings distinct operational benefits. The N2 class specification ensures a robust optical link budget (typically around 31dB), which is critical for maintaining signal integrity through multiple passive splitters (1:32 or 1:64) and fiber patches. This high power output directly translates to greater network reliability and fewer truck rolls to troubleshoot weak signals at the customer premises.

Moreover, the module’s ability to handle dual rates offers future-proofing. Operators can deploy this 10G PON transceiver today to serve asymmetric XG-PON customers and later upgrade them to symmetrical XGS-PON service via software provisioning, without ever changing the physical hardware in the central office. This flexibility significantly maximizes the return on infrastructure investment.

FAQ (Technical & Product Questions)

1. What is the difference between N1, N2, and E1 classes for OLT transceivers?

These classes define the optical power budget of the PON network. N1 typically supports a 29dB budget, while N2 (like this product) supports roughly 31dB, allowing for longer distances or more splitters. The E1 class offers an even higher budget (33dB) for the most demanding long-reach scenarios.

2. Can this XFP module support both XG-PON and XGS-PON?

Yes. This XGS-PON OLT XFP is designed to be compatible with both standards. It can communicate with XG-PON ONUs (10G/2.5G) and XGS-PON ONUs (10G/10G) on the same PON tree, provided the OLT system software supports dual-rate functioning.

3. How does this module coexist with existing GPON networks?

This module uses different wavelengths (Tx 1577nm / Rx 1270nm) than legacy GPON (Tx 1490nm / Rx 1310nm). By using a WDM1r combiner filter, you can run both GPON and XGS-PON services over the exact same fiber strand without interference.

4. Does this transceiver work with MPO/MTP® connectors?

Directly, no. This OLT module uses a simplex SC/UPC interface. However, in high-density central offices, the fiber patch cords leaving this transceiver often connect to an ODF that aggregates into MPO/MTP® trunks for efficient cable management between racks.

5. Is DDM/DOM support important for OLT transceivers?

Crucially important. Digital Diagnostic Monitoring (DDM) allows the OLT chassis to read real-time data from the transceiver, such as temperature and transmit power. This data is vital for “predictive maintenance,” helping ISPs identify failing modules or overheating issues before they cause a mass service outage.