Cisco SFP-50G-BXD-I | 50G SFP56 BiDi Transceiver, 10km, Industrial Temp

Q: What is BiDi technology and why does this module use it?
A: BiDi (bidirectional) technology uses wavelength division multiplexing to transmit and receive data over a single fiber strand instead of two. The SFP-50G-BXD-I transmits at 1330nm and receives at 1270nm, while its paired module does the reverse. This approach reduces fiber infrastructure costs and simplifies cabling in space-constrained environments.

Q: What module must this transceiver be paired with?
A: The SFP-50G-BXD-I (downstream) must always be paired with a SFP-50G-BXU-I (upstream) module at the opposite end of the fiber link. These modules use complementary wavelengths to enable bidirectional communication over a single fiber strand.

Q: What FEC settings are required for proper operation?
A: For 50G operation, the host port must have KP1-FEC (RS-FEC 544,514) enabled. For 25G operation, KR1-FEC is required on the host ports. Proper FEC configuration is essential for reliable transmission at the specified distances.

Q: What applications is the industrial temperature range designed for?
A: The industrial temperature rating of -40°C to 85°C makes this module suitable for outdoor installations, telecom shelters, factory floors, transportation networks, and other harsh environments where standard commercial-grade optics cannot operate reliably.

Q: Can this module operate at both 25G and 50G speeds?
A: Yes, the SFP-50G-BXD-I is a dual-rate transceiver supporting both 25GBASE-BR10 and 50GBASE-BR10 operations over the same 10km distance. The data rate is determined by the host device configuration and appropriate FEC settings.