Short answer: Usually yes, you use them in pairs, but the “pair” can be a media converter on one end and a fiber switch (or SFP in a switch) on the other, as long as both sides speak the same speed, wavelength, and optical mode. Should you use a single strand (BiDi) or two strands? Do converters need to be used in pairs? Can you mix brands? What wavelengths matter? This guide answers it all with clear diagrams, step-by-step checklists, and field-tested troubleshooting tips. For example, one module might transmit at 1310nm and receive at 1550nm, while the other does the opposite. Advantages: Considerations:. An optical module usually consists of an optical transmitting device (TOSA, including a laser), an optical receiving device (ROSA, including a photodetector), functional circuits,main control circuit board (PCBA), housing and optical (electrical) interface and other components. How do optical. BiDi optical modules can do this by utilizing full-duplex communication over a single fiber strand via two wavelengths. By reading this blog, you will understand how SFP BiDi technology allows you to save fiber, reduce costs, and simplify installation while enabling your network to increase. Therefore the module must be used in pairs, with matched BiDi wavelengths (e. Common wavelength of BIDI optical module SFP BIDI:TX1310nm/RX1550nm; TX1550nm/RX1310nm;TX1490nm/RX1550nm; TX1550nm/RX1490nm;TX1310nm/Rx1490nm; TX1490nm/Rx1310nm. 10G. · For Long-Distance Networks: Go with Single Mode (SM) modules, especially 1-core SM for simple long-distance needs, or 2-core SM if your system demands redundancy and higher capacity.
