25.8 Gbps error free transmission over 10 km at wavelengths from 1271 to 1331nm by uncooled (25 to 85°C) directly modulated DFB lasers for 100G-CWDM4

We successfully demonstrated 25.8 Gbps error free transmission through an 11.4km-long fiber using 1.3 μm directly modulated DFB lasers at the CWDM wavelengths for temperatures as high as 85°C.