10G EPON OLT XFP Transceiver | Symmetric 10G/10G | PR30 | Tx 1577nm / Rx 1270nm

Overview

The 10G EPON OLT XFP Symmetric Transceiver is a high-performance optical module designed for the headend (OLT) of next-generation Passive Optical Networks. Unlike asymmetric models, this transceiver provides Symmetric 10Gbps bandwidth (10G downstream and 10G upstream), making it the ideal solution for enterprise services, mobile backhaul, and high-density residential networks requiring massive upload capacity.

Housed in the XFP form factor, this module is built for legacy or high-capacity OLT chassis that utilize XFP interfaces for thermal management and signal integrity. It adheres strictly to the IEEE 802.3av 10GBASE-PR30 standard. The module utilizes a high-power 1577nm EML laser for transmission and a sensitive 1270nm APD burst-mode receiver to capture high-speed upstream data from ONUs.

Key Features

• Symmetric Bandwidth: Full 10Gbps Downstream / 10Gbps Upstream capacity.
• XFP Form Factor: Specific mechanical design for OLT line cards requiring XFP (hot-pluggable).
• PR30 Power Class: High optical power budget (approx. 29dB) supporting split ratios of 1:32 or 1:64 up to 20km.
• Wavelength Plan: Tx 1577nm (EML) / Rx 1270nm (APD).
• IEEE Standard: Fully compliant with IEEE 802.3av 10GBASE-PR30.
• Digital Diagnostics: Integrated DDM for real-time monitoring of voltage, current, and optical levels.

Applications

This symmetric module enables Service Providers to offer “Business Class” fiber connectivity:

• Enterprise Fiber Access: Delivering dedicated 10Gbps synchronous internet to businesses and office parks.
• 5G/LTE Mobile Backhaul: Providing the necessary low-latency, high-bandwidth upload path for small cell base stations.
• High-Density MDUs: Supporting large apartment complexes where aggregate upload traffic (video conferencing, cloud backups) is heavy.
• Campus Networks: Connecting university or hospital buildings with symmetric high-speed links over passive fiber infrastructure.

Specifications

Wavelength Architecture

It is crucial to note the wavelength difference between Symmetric and Asymmetric modes in 10G EPON. This Symmetric OLT receives upstream data at 1270nm. In contrast, Asymmetric OLTs receive at 1310nm. This distinct wavelength separation allows both services to potentially coexist on the same fiber if proper WDM filters are used, but the OLT module itself must match the ONU type.

FAQ

1. Can I use this Symmetric OLT module with an Asymmetric ONU?

No. An Asymmetric ONU transmits upstream at 1310nm. This Symmetric OLT module listens for upstream data at 1270nm. They are optically incompatible. You must pair this OLT with a Symmetric 10G ONU.

2. Why use XFP instead of SFP+?

XFP is an older, physically larger form factor. Some OLT manufacturers designed their line cards with XFP cages because XFP modules have better heat dissipation capabilities for high-power lasers like those used in PR30/PR40 classes. If your OLT line card has XFP slots, you must use XFP modules.

3. What does “PR30” mean?

PR30 is a power budget class defined by the IEEE 802.3av standard. It guarantees a link budget (difference between Tx power and Rx sensitivity) sufficient to overcome the loss of roughly 29dB, which typically corresponds to a 20km distance with a 1:32 splitter.

4. Does this transceiver support 1G EPON ONUs simultaneously?

While the 10G EPON standard is designed for coexistence, the transceiver itself operates at fixed wavelengths. Coexistence usually requires external WDM combiners to merge 1G EPON (1490nm/1310nm) and 10G EPON (1577nm/1270nm) signals. This specific module only transmits/receives the 10G EPON wavelengths.