Optical power of a 10g optical module over 10km

A typical 10G SFP+ optical module for 10 km single-mode fiber operates at 1310 nm with a transmitter power around -8 to 0 dBm and receiver sensitivity near -14 dBm, consuming approximately 1 W of electrical power.Key SpecificationsTransmitter and Wavelength: Most 10GBASE-LR SFP+ modules use a 1310 nm DFB laser for long-range transmission over single-mode fiber, which minimizes dispersion and maintains signal integrity over 10 km . CWDM variants may operate in the 1270–1610 nm range while still supporting 10 km reach . Optical Power Levels:Transmitter output power: Typically ranges from -8 dBm to 0 dBm, sufficient to overcome fiber attenuation over 10 km .Receiver sensitivity: Around -14 dBm, ensuring reliable detection of the optical signal with low bit error rates (BER < 10⁻¹²), . Power Consumption: Low-power 10G modules are optimized for energy efficiency, generally consuming 0.8–1 W, which reduces heat output and improves system stability in high-density deployments . Interface and Compatibility: These modules use LC duplex connectors and are compliant with SFP+ MSA standards, allowing plug-and-play integration with switches, routers, and network interface cards . Performance Considerations:Single-mode fiber is preferred for 10 km links due to its small core diameter, which reduces attenuation and dispersion, maintaining high signal integrity .Modules are designed to meet IEEE 802.3ae 10GBASE-LR standards, ensuring reliable 10 Gbps data transmission over the specified distance .SummaryFor a 10 km single-mode fiber link, a standard 10G SFP+ optical module:Uses a 1310 nm DFB laserProvides transmitter power of -8 to 0 dBmHas receiver sensitivity around -14 dBmConsumes ~1 W of electrical powerSupports 10 Gbps data rates with low BER These specifications ensure stable, long-range 10G Ethernet connectivity while maintaining energy efficiency and compatibility with modern network equipment .