Technical Overview

Form Factor: SFP28 (hot-pluggable)
Application: 25GbE DWDM transmission, C-Band 20 km (14 dB budget)
Standards: IEEE 802.3by 25GBASE-LR, ITU-T G.694.1 DWDM (50/100 GHz grid)
Connector: Duplex LC

General Specifications
• Data rate: 25.78 Gb/s
• Reach: up to 20 km over SMF (9/125 µm) with FEC enabled
• Optical budget: 14 dB
• Transmitter: DWDM C-Band EML (narrow linewidth)
• Receiver: APD (Avalanche Photodiode)
• Power supply: +3.3 V
• Power consumption: = 1.5 W
• Operating case temperature: 0 to +70 °C
• DDM/DOM: Supported via I²C

Optical Specifications
Transmitter
• Center wavelength: ITU DWDM 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
• Sensitivity (OMA): = –15 dBm
• Stressed sensitivity: = –12 dBm
• Receiver overload: –4 dBm max.
• LOS assert/de-assert: –26 dBm / –21 dBm
• LOS hysteresis: 0.5 – 4.5 dB

Electrical Specifications
• Supply voltage: 3.15 – 3.45 V
• Max current: = 450 mA
• Input differential impedance: 100 O (90–110 O)