H3C10G Optical Module Optical Power Parameters

The H3C10G optical module, such as the SFP-XG-LX-SM1310, typically operates at 1310nm with a 10G data rate and features optical transmit power ranging from -8.2 dBm to -3 dBm and receiver sensitivity around -14.4 dBm.Key Optical Power SpecificationsWavelength: 1310 nm for standard single-mode modules (SFP-XG-LX-SM1310) suitable for long-distance transmission up to 10 km over G.652 single-mode fiber .Transmit Optical Power (Tx): Typically ranges from -8.2 dBm to -3 dBm, ensuring sufficient signal strength for reliable 10G links .Receiver Sensitivity (Rx): Around -14.4 dBm, allowing the module to detect weak incoming signals while maintaining low bit error rates .Optical Power Budget: The difference between Tx and Rx levels provides a margin to accommodate fiber loss and connector insertion loss, supporting stable links over distances up to 10 km .Digital Optical Monitoring (DOM): Many H3C 10G modules include DOM per SFF-8472, enabling real-time monitoring of transmit power, received power, laser bias current, temperature, and supply voltage .Additional ConsiderationsModule Type: H3C10G modules are SFP+ form factor, compliant with IEEE 802.3ae 10GBASE-LR/LW standards, and support LC duplex connectors .Link Distance: Classified as long-range (LR), typically supporting up to 10 km over single-mode fiber, with optical power levels designed to overcome fiber attenuation and dispersion .BIDI Modules: For bi-directional modules (e.g., SFP-XG-LX-SM1330-BIDI), separate wavelengths are used for transmit and receive paths, and modules must be paired correctly to maintain optical power balance .Compliance: H3C optical modules are Class 1 laser products, meeting IEC-60825 and FDA/CDRH safety standards .Practical ImplicationsWhen deploying H3C10G optical modules, ensure that the transmit power exceeds the minimum receiver sensitivity after accounting for fiber loss, splices, and connectors. Using DOM features can help monitor optical power in real time to prevent link degradation and maintain network reliability . By selecting modules with appropriate optical power parameters and adhering to recommended distances, H3C10G modules provide stable, high-speed 10G connectivity for enterprise and data center networks .