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What is the wavelength of a BiDi SFP?
Knowledge Base + 2024.01.11

BiDi SFP (Bidirectional Small Form-Factor Pluggable) transceivers are designed to transmit and receive data over a single fiber optic cable. They use wavelength division multiplexing (WDM) technology, where different wavelengths are used for upstream and downstream communication on the same fiber.


The specific wavelengths used for BiDi SFPs can vary depending on the implementation and the standard being followed. However, a common configuration for BiDi SFPs involves using two different wavelengths, one for upstream and another for downstream communication. For example:

  • Upstream (TX): 1310 nm

  • Downstream (RX): 1490 nm

These wavelengths are just an example, and actual implementations may vary. It's essential to check the specifications provided by the manufacturer or supplier of the BiDi SFP transceivers you are using to determine the specific wavelengths supported by those devices.