Below is a comparison table illustrating key specs of selected BiDi SFP+ modules from leading vendors. Wavelength: The specific transmit and receive wavelengths must match complementary transceivers at the far end. Instead of using separate fibers for transmit and receive signals, BiDi modules rely on wavelength division multiplexing (WDM) to send signals in opposite. BiDi optical modules can do this by utilizing full-duplex communication over a single fiber strand via two wavelengths. Challenge: How to optimize an existing network and serve more customers without trenching more fiber, deploying tech teams, or complex field replacement. In terms of SFPs, BiDi transceivers transmit at one wavelength and receive at another.
