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by Cisco
Product Line: Cisco Series
Product Type: Dense Wavelength-Division Multiplexing Module
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Title: Surplus

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Product Description

The DWDM-XFP-56.55= is a Cisco-compatible XFP module designed for high-speed data transmission, supporting a maximum data rate of 10.5 Gb/s over a maximum distance of 80 km with an EML transmitter and an APD receiver. It operates at a wavelength of 1556.55 nm within the C band, with ITU Channel 26 spacing of 100 GHz, and features digital diagnostics monitoring (DDM) or digital optical monitoring (DOM) support, ensuring compatibility with extensive Cisco switches, routers, and optical transport devices. This module utilizes a duplex LC connector for single-mode fiber (SMF), maintains performance within a minimum operating temperature of -5 °C and a maximum operating temperature of 70 °C, and adheres to the SFP+ MSA, CPRI, and eCPRI protocols.

FAQs for the DWDM-XFP-56.55=

  • What is the form factor of the networking component described?
    The form factor is XFP.
  • What is the maximum data rate supported by the XFP?
    It supports a maximum data rate of 10.5 Gb/s.
  • How far can signals be transmitted using this device?
    Signals can be transmitted up to a distance of 80 km.
  • What type of transmitter and receiver does the XFP use?
    It uses an EML transmitter and an APD receiver.
  • Does the device offer digital diagnostics monitoring?
    Yes, digital diagnostics monitoring is supported.
  • What connector type is used for this XFP?
    It uses a Duplex LC connector type.
  • What type of cable is compatible with this device?
    The device is compatible with SMF (Single-Mode Fiber).
  • What is the wavelength specification for this XFP module?
    The wavelength is specified at 1556.55 nm.
  • What are the operating and storage temperature ranges?
    Operating temperatures range from -5 to 70 °C, while storage temperatures range from -40 to 85 °C.
  • What protocols is the device compliant with?
    The device is compliant with SFP+ MSA, CPRI, and eCPRI protocols.

Product Review

The Cisco DWDM-XFP-56.55= offers a maximum data rate of 10.5 Gb/s and supports distances up to 80 km, making it suitable for long-range optical transport applications. However, its operating temperature range is limited to a maximum of 70 °C, potentially restricting its use in high-temperature environments. Additionally, it is designed for compatibility with Cisco switches, routers, and optical transport devices, ensuring seamless integration but limiting its use with non-Cisco hardware.


The Cisco DWDM-XFP-56.55= transceiver module is designed for high-capacity, long-distance optical networking. This module is a critical component for enterprises and service providers looking to expand their network's bandwidth capabilities while ensuring reliable, high-speed data transmission. It is specifically engineered for use with Cisco switches, routers, and optical transport devices, optimizing network performance and compatibility. At the core of its specifications, the module operates with a form factor of XFP and supports a maximum data rate of 10.5 Gb/s, making it suitable for high-bandwidth applications. It can transmit data over distances up to 80 km without signal degradation, thanks to its EML transmitter and APD receiver. These components ensure the module's efficiency and reliability over long distances, making it an ideal choice for extensive network infrastructures. The Cisco DWDM-XFP-56.55= operates at a wavelength of 1556.55 nm within the C-band, the most widely used band for DWDM technology due to its low attenuation properties. This allows for denser channel spacing and, consequently, a higher capacity for data transmission. The module is designed to fit into the ITU Channel 26 with a channel spacing of 100 GHz, adhering to stringent DWDM network spacing requirements. This module also features Digital Optical Monitoring (DOM) support, enabling real-time monitoring of the module's operational parameters, such as temperature, supply voltages, laser bias current, transmit optical power, and receive optical power. This capability allows for proactive maintenance and troubleshooting, ensuring the network's optimal performance.
  • Connector Type: Duplex LC, ensuring high compatibility and easy integration into existing network infrastructures.
  • Cable Type: SMF (Single-Mode Fiber), offering superior performance for long-distance transmission.
  • Protocols: SFP+ MSA Compliant, CPRI, eCPRI, ensuring broad compatibility with various networking standards and devices.
The module operates efficiently within a temperature range from -40 °C to 85 °C, making it resilient in diverse environmental conditions. This wide operating temperature range is crucial for ensuring reliability in various deployment scenarios, from data centers to outdoor installations. Power consumption is capped at a maximum of 3.5 W, aligning with energy-efficient network design principles. The transmitter power ranges from -1 dBm to 4 dBm, while the receiver sensitivity is less than -24 dBm, indicating the module's ability to perform reliably under varying signal strengths. In summary, the Cisco DWDM-XFP-56.55= transceiver module is a high-performance, long-distance networking solution. It combines advanced optical technology with practical features like digital diagnostics and broad protocol support, making it an essential component for modern, high-capacity networks. Its compatibility with Cisco devices and adherence to industry standards further ensures that this module is a versatile choice for upgrading and expanding network infrastructures.


Item NumberCisco DWDM-XFP-56.55=
Module TypeXFP
Peak Data Rate10.5 Gigabits per second
Max Reach80 kilometers
Emission SourceEML
Detection TypeAPD
Digital Diagnostics MonitoringEnabled
Connection InterfaceDuplex LC
Fiber TypeSingle-Mode Fiber
Optical Wavelength1556.55 nm
Lowest Operating Temp0 °C
Highest Operating Temp70 °C
Lowest Storage Temp-40 °C
Highest Storage Temp85 °C
Power Use Maximum3.5 Watts
Minimum Output Power-1 dBm
Maximum Output Power4 dBm
Receiver Overload Threshold-24 dBm or higher
Diagnostics Monitoring CapabilityAvailable
Compatibility StandardsSFP+ MSA, CPRI, eCPRI Compliant
Recommended ApplicationCisco network switches, routers, and fiber optic equipment
Defined ITU Channel26
Channel Spacing100 GHz
Frequency BandC Band

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