When connected to a 10GBASE-ER standard optical module (1550 nm, 10 Gbit/s, 40 km), an SFP-10G-ER-1310 optical module supports only 20 km of maximum transmission distance. As part of the O-band (1260–1360 nm), it balances low dispersion, stable performance, and cost efficiency. This makes it widely adopted in data centers, enterprise backbones, and metro access. Choosing the right optical module requires evaluating multiple factors, including fiber type, wavelength (850nm vs. 1310nm), link budget, and real installation conditions, rather than relying solely on datasheet specifications. In this guide, we will break down what SFP distance really means, how. The distance that a 1310nm SFP (Small Form-Factor Pluggable) transceiver module can reach depends on the specific type and standard of the module. Here are some common types: Reach: Typically used for. Take 2. 4db/km, the output optical power is -2~3, the conventional receiving sensitivity is -24, but this customer requires the receiving sensitivity to. Among the different kinds of optical fibers, the 1310nm wavelength has some unique features and uses.
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