General Description

The Optical Transceiver operating at 1310nm is a high-performance, 20KM 1.25G SFP (Small Form-factor Pluggable) module designed for data center applications. It supports data transmission distances up to 20 kilometers over single-mode fiber (SMF) and is equipped with Digital Diagnostics Monitoring (DDM) capabilities for real-time monitoring of critical parameters. The module features an LC duplex connector, ensuring easy integration and reliable performance in high-density network environments.

Products Parameters:

  • High Performance – 20KM 1.25G SFP Single mode duplex 1.25 Gigabit SFP transceiver, supports up to 20km fiber length connection and 0~70ºC operating temperature.
  • Widely Compatible – The SFP transceiver are widely compatible with Cisco products(Cisco 3000 &6000 series router are not supported) ( Not recommended for HP, Juniper and Aruba products). The fiber module also works well with switch, router, media converter and more gigabit SFP optic ports
  • High Quality – The shell adopts high density and heat-resistant insulation zinc alloy, high performance chipset, which makes the product more stable and efficient transmission, and low power consumption. More than 1000k+ pcs SFP are already deploy in global market
  • 100% Aging Testing – The gold finger of SFP module are carefully examined to reach the perfect combination of circuit assembly precision. All SFP are 100% aging testing after assembling to ensure that all sold modules are stable and high reliability
  • Fast & Convenient Connection – The SFP support hot swappable, which just need plug and play for fast connection with LC-LC Single-mode fiber path.

Key Features

  • High Data Rate: Supports up to 1.25Gbps, providing fast and reliable data transmission for data center applications.
  • Long Distance Transmission: Capable of transmitting data over distances up to 20 kilometers, suitable for extended network links.
  • 1310nm Wavelength: Operates at a wavelength of 1310nm, optimized for single-mode fiber applications.
  • DDM Support: Features Digital Diagnostics Monitoring (DDM) for real-time monitoring of parameters such as temperature, optical output power, and supply voltage.
  • LC Duplex Connector: 20KM 1.25G SFP Equipped with an LC duplex connector, facilitating easy installation and high-density connectivity.
  • Compliance: Adheres to industry standards, ensuring compatibility with a wide range of network equipment.


  • Data Rate: 1.25Gbps
  • Wavelength: 1310nm
  • Connector Type: LC Duplex
  • Cable Type: Single-Mode Fiber (SMF)
  • Transmission Distance: Up to 20km
  • Transmitter Type: Laser Diode
  • Receiver Type: PIN Photodiode
  • Form Factor: SFP (Small Form-factor Pluggable)
  • Digital Diagnostics Monitoring (DDM): Supported
  • Protocols: Supports Ethernet and other networking protocols


This Optical Transceiver is ideal for a variety of data center applications, including:

  • Data Center Interconnects: Provides reliable and high-speed links between data centers, ensuring efficient data flow and redundancy.
  • Enterprise Networks: Suitable for enterprise network infrastructures requiring robust and extended connectivity solutions.
  • Telecommunications: Ideal for telecom networks needing high-capacity, long-distance optical links.
  • Campus Networks: Enhances connectivity across large campus networks with long-distance fiber links.


  • Extended Reach: Supports up to 20 kilometers of data transmission, suitable for long-distance network requirements.
  • High Performance: Ensures stable and high-quality data transmission, supporting critical data center operations.
  • Real-Time Monitoring: DDM capabilities provide real-time diagnostics, enhancing network management and troubleshooting.
  • Wide Compatibility: Compliance with industry standards ensures interoperability with various network devices and systems.
  • Easy Integration: LC duplex connector and SFP form factor allow for easy and flexible integration into existing network setups.

The Optical Transceiver 1310nm 20KM 1.25G SFP with DDM and LC Connector is a reliable and efficient solution for high-performance data center applications, offering long-distance connectivity and real-time monitoring capabilities to support the demanding needs of modern network infrastructures.


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