Under 1550nm wavelength, 100Mbps and 1Gbps optical transceiver modules can transmit up to 160km, and 10Gbps optical transceiver modules can transmit up to 80km. )Do you really need a 10km module for a 300m connection? Many customers unknowingly overspend by not matching transceiver distance with real needs. Product Knowledge: Choosing the Right One: 🔎 Match fiber type (MMF or SMF) 🔎 Consider link budget and optical power 🔎 Watch for connector. This article answers one question cleanly: how far will short-reach and long-reach optical transceivers actually carry your signal? I'll stick to the essentials—standards, typical real-world distances, why the limits exist, and a short buying checklist you can use the moment you walk into a rack. An SFP (Small Form-factor Pluggable) module transmits data over fiber using specific wavelengths and power levels, which directly influence how far the signal can travel before degradation occurs. This is why two modules with the same form factor can have dramatically different ranges—some limited. The transmission distance of optical modules is divided into short distance, medium distance, and long distance. Distance: Capable of supporting up to 300 meters over multimode fiber, SR is ideal for short, high-density data transfers. However, when it comes to deployment, one of the most frequent dilemmas is whether to choose long-range or.