100g Optical Module Parameters

A 100G optical module typically supports 100Gbps data rate, uses QSFP28 or similar form factors, operates over multimode or single-mode fiber, and features low power consumption with various transmission distances depending on fiber type.Key SpecificationsData Rate: 100 gigabits per second (Gbps), often achieved using four 25Gbps channels in parallel (QSFP28) or serial transmission in other form factors .Form Factor: Common form factors include QSFP28, CFP, CXP, and OSFP, with QSFP28 being the most widely used for high-density data center applications .Transmission Distance: Varies by module type and fiber:100GBASE-SR4: Up to 70m over OM3 and 100m over OM4 multimode fiber .100GBASE-SL4: Up to 20m over OM3 and 30m over OM4 multimode fiber .CWDM4/LR4 modules: Can reach several kilometers over single-mode fiber using wavelength division multiplexing .Wavelength: Modules operate at different wavelengths depending on type: 850nm for short-range multimode, 1310nm or 1550nm for long-range single-mode, and multiple wavelengths for CWDM/DWDM modules .Power Consumption: Typically low, optimized for data center efficiency; QSFP28 modules often consume less than 5W per module .Interface and Connectivity: Modules use MPO or LC connectors for multimode or single-mode fiber, supporting IEEE-compliant 100GBASE Ethernet interfaces .Modulation and Technology: QSFP28 modules may use NRZ or PAM4 modulation, with some supporting coherent transmission for long-haul applications .Additional Features:Hot-swappable for easy replacement .Digital diagnostics monitoring (DOM) for real-time monitoring of temperature, voltage, and optical power .Forward Error Correction (FEC) support, e.g., KP4 FEC, to improve link reliability .ApplicationsData Center Networks: High-speed interconnects between servers, switches, and storage .Telecommunications: Long-haul and metro network links .High-Performance Computing: Low-latency, high-bandwidth connections for compute clusters .In summary, a 100G optical module is a compact, high-speed transceiver designed for flexible deployment in modern high-bandwidth networks, with parameters tailored to fiber type, distance, and power efficiency requirements .