EPON OLT PX20++++ 1.25G SFP Optical Transceiver Module – +10dBm 20KM

The EPON OLT PX20++++ is a high-power SFP optical transceiver module designed for compatible EPON Optical Line Terminal (OLT) equipment. It provides bidirectional optical communication over a single strand of single-mode fiber and is intended for FTTH, FTTB, ISP, telecom, and Passive Optical Network applications.

The module shown is labeled for 1.25Gbps / 1.25Gbps operation, 1490nm transmit, 1310nm receive, 20km transmission distance, SC optical interface, and +10dBm transmit power.

EPON OLT Optical Module

This module is designed for the OLT side of an Ethernet Passive Optical Network (EPON). It provides the optical interface between a compatible EPON OLT PON port and the Optical Distribution Network (ODN), which connects the OLT to multiple ONU/ONT devices through passive optical splitters.

Symmetrical 1.25Gbps EPON Operation

The module is labeled for 1.25Gbps transmit and 1.25Gbps receive operation. This corresponds to the symmetrical physical signaling rate commonly associated with Gigabit EPON networks.

1490nm TX / 1310nm RX

The module uses wavelength-division multiplexing for bidirectional communication over a single optical fiber. On the OLT side, downstream signals are transmitted at 1490nm while upstream optical signals from compatible ONU/ONT equipment are received at 1310nm.

High-Power +10dBm Optical Output

The module label specifies a transmit optical power of +10dBm. This high-power optical output is intended for demanding EPON optical distribution networks where additional optical power budget may be required.

PX20++++ Optical Class

The module is marked PX20++++, identifying it as a high-power EPON OLT optical module. Because PX20++++ is a vendor-specific extended designation rather than a universal IEEE optical class name, the exact transmitter and receiver limits should be verified against the module supplier's specification when engineering an ODN.

20KM Rated Transmission Distance

The module is labeled for a transmission distance of up to 20km. Actual achievable distance depends on the complete optical loss budget, including fiber attenuation, optical splitters, connectors, splices, ONU/ONT optical characteristics, and installation conditions.

Single SC Optical Interface

A single SC optical connector is provided for bidirectional communication over single-mode fiber. This allows upstream and downstream EPON traffic to share one optical fiber using separate wavelengths.

SFP Form Factor

The compact SFP form factor allows the transceiver to be installed in compatible EPON OLT PON interfaces. Compatibility must be confirmed with the exact OLT model, PON service board, firmware, and optical requirements.

Typical Applications

• EPON Optical Line Terminals (OLT)
• FTTH – Fiber to the Home
• FTTB – Fiber to the Building
• ISP Broadband Networks
• Telecommunication Access Networks
• Passive Optical Networks
• Enterprise Fiber Access Networks
• High Optical-Budget EPON Deployments

Key Specifications

• Product Type: EPON OLT Optical Transceiver
• Optical Class Marking: PX20++++
• Form Factor: SFP
• PON Technology: EPON
• Transmit Data Rate: 1.25Gbps
• Receive Data Rate: 1.25Gbps
• Transmit Wavelength: 1490nm
• Receive Wavelength: 1310nm
• Transmission: Single-Fiber Bidirectional
• Fiber Type: Single-Mode Fiber
• Rated Distance: Up to 20km
• Transmit Power Marking: +10dBm
• Optical Connector: SC
• Application: EPON OLT / FTTH Networks

Product Label Information

• Label: EPON-OLT-PX20++++
• Speed: SFP 1.25G / 1.25G
• TX Wavelength: 1490nm
• RX Wavelength: 1310nm
• Distance: 20KM
• Connector: SC
• Optical Power: +10dBm