Cisco SFP28 Module

Cisco SFP-25G-BX40D-I and SFP-25G-BX40U-I (single-fiber bidirectional applications)The Cisco 25GBASE-BR40 Modules support link lengths of 40km over a single strand of standard Single-Mode Fiber (SMF) G.652 at 25G. An SFP-25G-BX40D-I device is always connected to an SFP-25G-BX40U-I device with a single strand of standard SMF. The communication over a single strand is achieved by separating the transmission wavelength of the two devices. SFP-25G-BX40D-I transmits at 1314nm wavelength and receives at 1289nm wavelength. The SFP-25G-BX40U-I transmits at 1289nm and receives at 1314nm wavelengths.These modules require RS-FEC on the host ports for full reach operation at 25G. These modules have an industrial temperature range.