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by Cisco
Product Line: Cisco Series
Product Type: CFP Module
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Product Description

The CFP-100G-ER4 is designed for long-distance optical networking, supporting a link length of up to 40 km on Single-Mode Fiber (SMF) with a core size of G.652 microns, and utilizes a 1,310 nm wavelength laser. It features digital optical monitoring, operates within a laser class 1 safety standard, and has a power consumption up to 24 W. Dimensions are 144.8 x 82 x 13.6 mm, weight is under 300 g, and it operates between 0 °C to 70 °C, with storage temperatures ranging from -40 °C to 85 °C.

FAQs for the CFP-100G-ER4

  • What is the maximum link length supported by this device?
    The device supports a maximum link length of up to 40 km.
  • Can you specify the core size of the fiber used with part number G.652?
    The core size of the fiber used with G.652 is specified as G.652 microns.
  • What type of laser class does this device fall under?
    This device is classified under Laser Class 1.
  • What is the operating temperature range for this hardware?
    The operating temperature range is 0 °C to 70 °C.
  • Does this device offer Digital Optical Monitoring?
    Yes, Digital Optical Monitoring is supported.
  • What is the maximum power consumption of this networking hardware?
    The maximum power consumption is 24 W.
  • What is the wavelength used by this device?
    The wavelength used is 1,310 nm.
  • What are the minimum and maximum transmit power levels per lane?
    The minimum transmit power per lane is -2.9 dBM and the maximum is 2.9 dBM.
  • What fiber type is compatible with this device?
    The device is compatible with SMF (Single-Mode Fiber).
  • What are the dimensions and weight of this device?
    The dimensions are 144.8 x 82 x 13.6 mm and it weighs less than 300 g.

Product Review

The CISCO CFP-100G-ER4 offers a commendable link length of up to 40 km on single-mode fiber (SMF) with a core size of G.652 microns, suitable for long-distance networking needs. However, its maximum power consumption of 24 W might be a drawback for energy-conscious deployments. Additionally, its support for digital optical monitoring allows for efficient network troubleshooting and maintenance, enhancing its utility in complex network environments.


The CISCO CFP-100G-ER4 is a high-performance, 100 Gigabit Ethernet transceiver designed for long-range data communication over single-mode fiber (SMF). This transceiver is engineered to support distances of up to 40 kilometers, making it an ideal choice for extended network connections in large campuses, metropolitan area networks, and between geographically dispersed data centers. At its core, the CISCO CFP-100G-ER4 operates at a wavelength of 1,310 nm and is compatible with G.652 micron core size SMF, ensuring efficient data transmission through standard single-mode fiber optic cables. This compatibility is pivotal for organizations looking to leverage existing fiber infrastructure while upgrading to higher network speeds. Incorporating Digital Optical Monitoring (DOM), the transceiver provides real-time access to parameters such as temperature, supply voltages, laser bias current, transmit optical power, and receive optical power. This capability allows for proactive monitoring and maintenance, helping to minimize downtime and ensure consistent network performance. The transceiver adheres to the Laser Class 1 standard, ensuring safety for operators and maintenance personnel by limiting laser output power. Despite its powerful performance capabilities, the CISCO CFP-100G-ER4 maintains a maximum power consumption of 24 watts, optimizing energy use while delivering high-speed data transmission. Key specifications include: - Maximum transmit power of 2.9 dBm per lane and a minimum transmit power of -2.9 dBm per lane, which ensures flexibility and reliability in various operational conditions. - The ability to receive signals with power levels ranging from a maximum of 4.5 dBm per lane to a minimum of -20.9 dBm per lane, enabling the transceiver to maintain signal integrity over long distances. - Physical dimensions of 144.8 x 82 x 13.6 mm and a weight of less than 300 grams, making it compact and lightweight for easy installation in a variety of networking equipment. Additional features include: -
  • Support for operating temperatures ranging from 0 °C to 70 °C, ensuring reliable performance in a wide range of environmental conditions.
  • Storage temperature tolerance from -40 °C to 85 °C, allowing for flexibility in inventory and deployment planning.
  • Comprehensive support for network management and maintenance activities through advanced digital diagnostics.
The CISCO CFP-100G-ER4 is designed for organizations that require reliable, high-speed data transmission over long distances. Its advanced features and specifications make it a powerful tool for expanding and enhancing network capabilities, ensuring that data flows efficiently and securely across the network infrastructure. Whether upgrading existing networks or deploying new ones, this transceiver provides a scalable, high-performance solution for meeting the demands of modern data communications.


Item NumberCISCO CFP-100G-ER4
Maximum DistanceUp to 40 kilometers
Emission Wavelength1310 nanometers
Cable TypeSingle-Mode Fiber
Fiber Core DiameterG.652 microns
Support for Optical MonitoringSupported
Peak Power Usage24 Watts
Class of Laser ProductClass 1
Highest Output Power Per Lane+2.9 dBM
Lowest Output Power Per Lane-2.9 dBM
Highest Input Power Per Lane+4.5 dBM
Lowest Input Power Per Lane-20.9 dBM
Dimensions144.8 x 82 x 13.6 mm
MassUnder 300 grams
Operational Temperature Range0 to 70 degrees Celsius
Temperature Range for Storage-40 to 85 degrees Celsius

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