10G EPON OLT SFP+ Transceiver | Symmetric 10G/10G | PR40 Class | Tx 1577nm

Overview

The 10G EPON OLT SFP+ Symmetric PR40 Transceiver is a high-performance optical module designed for the central office (OLT) side of next-generation passive optical networks. Engineered for Symmetric 10G EPON deployments, it delivers massive 10 Gbps bandwidth in both downstream and upstream directions, making it the ideal solution for enterprise fiber access, mobile backhaul, and high-density residential gigabit services.

This module features a PR40 power class rating, offering a superior optical budget compared to standard PR30 modules. This allows network operators to support higher split ratios (up to 1:128) or longer transmission distances without needing additional optical amplification. It operates using a 1577nm EML laser for downstream transmission and a 1270nm APD/TIA burst-mode receiver for upstream data, ensuring full compliance with the IEEE 802.3av standard.

Key Features

• Symmetric 10G Performance: Provides 10Gbps capacity for both upload and download, enabling enterprise-grade SLA services.
• High Power Budget (PR40): Extended optical budget supports complex ODN architectures, higher split ratios (1:64 or 1:128), and greater reach.
• OLT Form Factor: SFP+ package designed for high-density OLT chassis line cards.
• Standard Compliance: Fully compliant with IEEE 802.3av 10GBASE-PR-D40 specifications.
• Burst-Mode Receiver: Advanced 1270nm APD receiver capable of handling high-speed burst traffic from multiple ONUs.
• DDM Support: Integrated Digital Diagnostic Monitoring for real-time tracking of optical power, voltage, and temperature.

Applications

This OLT module acts as the “heart” of a 10G fiber network, powering various critical applications:

• Enterprise Fiber Access: Delivering symmetrical multi-gigabit connectivity to business parks and commercial buildings.
• 5G Mobile Backhaul: Providing the low-latency, high-bandwidth upstream link required for small cell and macro cell towers.
• High-Density Residential: Supporting future-proof XGS-PON style services using EPON standards for 8K video and cloud gaming.
• Campus Networks: Ideal for university or hospital campus backbones requiring high symmetric throughput.

Specifications

Why Choose PR40 Class?

The PR40 classification indicates a higher optical power budget than the standard PR30. While PR30 is sufficient for typical 20km links with 1:32 splits, PR40 modules emit higher transmit power and have better receiver sensitivity. This “extra headroom” is critical for networks that use older cabling infrastructure with higher insertion loss, or for operators wanting to maximize their subscriber count per PON port by using 1:64 or 1:128 splitters.

FAQ

1. What is the difference between this OLT module and an ONU module?

This is an OLT (Optical Line Terminal) module, installed at the ISP’s central office. It transmits at 1577nm and receives at 1270nm. An ONU module is installed at the customer’s home and does the opposite (transmits at 1270nm, receives at 1577nm). They are not interchangeable.

2. Can this module support Asymmetric ONUs (10G/1G)?

Generally, yes. The IEEE 802.3av standard allows for OLTs to communicate with both symmetric (10G/10G) and asymmetric (10G/1G) ONUs on the same fiber strand, provided the OLT software and line card support dual-rate TDMA scheduling.

3. What wavelength does this module use?

It transmits downstream data on 1577nm and receives upstream data on 1270nm. This wavelength plan allows it to coexist with legacy 1G EPON (1490nm/1310nm) on the same fiber if a WDM combiner is used.

4. Does this module work in a standard SFP+ switch port?

No. While it fits physically, this is a PON (Passive Optical Network) transceiver. It requires a specific MAC layer and timing protocols found only in OLT chassis equipment, not standard Ethernet switches.

5. What is the connector type?

The interface is a single SC/UPC receptacle. It is not LC, and it is not APC (Green). Ensure you use a Blue SC connector.