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What is the distance of SFP wavelength?
Knowledge Base + 2024.01.10

The distance that an SFP (Small Form-Factor Pluggable) transceiver can support depends on several factors, including the type of transceiver, the wavelength, and the type of fiber optic cable used. Different SFP transceivers operate at different wavelengths, and the distance capabilities vary accordingly. Here are common wavelength categories and their associated distance ranges: 

  1. 850nm (Short Wavelength):

    • Distance Range: Typically used for short-distance connections.

    • Distance Capability: Up to several hundred meters.

    • Applications: Commonly used for multimode fiber optic connections in local area networks (LANs) and short-distance data center connections.

  2. 1310nm (Intermediate Wavelength):

    • Distance Range: Offers a balance between short and long distances.

    • Distance Capability: Up to several kilometers.

    • Applications: Suitable for both multimode and single-mode fiber optic connections in various networking applications.

  3. 1550nm (Long Wavelength):

    • Distance Range: Used for longer-distance connections.

    • Distance Capability: Several kilometers to tens of kilometers.

    • Applications: Commonly used for single-mode fiber optic connections in long-haul networking and metropolitan area networks (MANs).

  4. DWDM (Dense Wavelength Division Multiplexing):

    • Distance Range: Supports longer distances with the use of wavelength-division multiplexing.

    • Distance Capability: Potentially over 100 kilometers.

    • Applications: Used in scenarios where high-capacity and long-distance communication are required, often in long-haul and submarine networks.

It's important to note that the distance capabilities mentioned are general guidelines, and actual performance may vary based on factors such as the specific transceiver, fiber optic cable quality, connectors, and the networking environment. Additionally, advancements in technology may lead to transceivers with improved reach and performance.

Always refer to the specifications provided by the SFP transceiver manufacturer for accurate information on the supported wavelengths and distance capabilities of a particular module.