Wavelength: Single-mode SFP transceivers use laser-based transmission at 1310nm or 1550nm, optimized for long-distance communication over single-mode fiber with a core diameter of approximately 9/125 µm . Transmit Power: Typical optical output power ranges from -9 dBm to 0 dBm, depending on the module type and intended link distance . Receive Sensitivity: The receiver can detect signals as low as -20 dBm to -3 dBm, ensuring reliable data reception over long distances . Link Distance: Depending on the optical power budget and fiber quality, single-mode SFPs can support 10 km to over 80 km. Shorter distances are common for 1310nm modules, while 1550nm modules are used for longer links . Fiber Type: Single-mode fiber (SMF) is used, which supports only a single transverse mode of light, minimizing modal dispersion and allowing high-bandwidth, long-distance transmission . Standards Compliance: These transceivers are compatible with IEEE 802.3 standards such as 1000BASE-LX for long-distance single-mode links and follow ITU-T G.652 recommendations for fiber characteristics .
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