Technical Overview
Form Factor: SFP28 (hot-pluggable)
Application: 25GbE DWDM transmission, C-Band 40 km (16 dB budget)
Standards: IEEE 802.3by 25GBASE-LR, ITU-T G.694.1 DWDM (50/100 GHz grid)

General Specifications
• Data rate: 25.78 Gb/s
• Reach: up to 40 km over SMF (9/125 µm) with FEC enabled
• Optical budget: 16 dB
• Transmitter laser: DWDM C-Band EML (narrow linewidth)
• Receiver: APD (Avalanche Photodiode)
• Connector: Duplex LC
• Operating temperature: 40 to +70 °C
• Power consumption: 1.5 W (typical)
• DDM/DOM: Supported via I²C

Optical Specifications
Transmitter
• Center wavelength: ITU grid (channel specific, see list)
• Wavelength spacing: 0.4 nm (100 GHz grid)
• Spectral width: = 0.25 nm
• Output power: –1 to +5 dBm
• Extinction ratio: = 6.5 dB
• Tx OFF power: = –30 dBm
• RIN: = –130 dB/Hz
Receiver
• Wavelength range: 1520 – 1570 nm
• Receiver sensitivity (OMA): = –17 dBm
• Stressed sensitivity: = –14.5 dBm
• Receiver overload: –4 dBm max.
• LOS assert/de-assert: –25 dBm / –22 dBm

Electrical Specifications
• Supply voltage: 3.15 – 3.45 V
• Power supply current: = 450 mA
• Differential input impedance: 100 O (90–110 O)
• Data input swing: 250–1200 mV
• Data output swing: 250–800 mV
• Rise/Fall time: = 30 ps

Absolute Maximum Ratings
• VCC: –0.5 to +4 V
• Storage temperature: –40 to +85 °C
• Case temperature: –40 to +85 °C

DDM Thresholds (example values)
• Temperature: 40 °C / 45°C / +70 °C / +850 °C (LA/LW/HW/HA)
• Voltage: 3.0 / 3.1 / 3.5 / 3.6 V
• Tx Bias: 10 / 15 / 90 / 100 mA
• Tx Power: –4 / –3 / +5 / +6 dBm
• Rx Power: –20 / –18 / –4 / –3 dBm

Typical Applications
• DWDM 25GbE transport up to 40 km
• Mobile backhaul / fronthaul (CPRI/eCPRI)
• Metro DWDM transport via passive mux/demux