Do dual-mode optical modules need to be paired for use
For duplex SFPs at the two sides, we should connect two SFPs of the same wavelengths. The short answer is yes, you can connect an SFP module on one end of your fiber link and an SFP+ on the other end. Single fiber modules (BiDi) use one fiber for both transmitting and receiving data. Think of it as the "translator" for your network equipment, converting electrical signals into optical signals.
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