SFP Lc Bidirectional

A bidirectional SFP (BiDi SFP) is a fiber optic transceiver that sends and receives data over a single strand of optical fiber by using two different wavelengths (colours of light) — one for TX (transmit) and one for RX (receive). This is achieved using Wavelength Division Multiplexing (WDM) technology. Normal SFPs: Usually use two fibres — one for transmit and one for receive. BiDi SFPs: Use one fibre for both directions.