Technical Documentation

40-Gigabit Ethernet 40GBASE Optical Interface Specifications

Table 1 shows the optical interface specifications for the 40GBASE-R standard.

Table 1: 40GBASE-R Optical Interface Specifications

Parameter	40GBASE-R
Optical interface	Singlemode
Standard	IEEE 802.3ba-2010
Maximum distance	9/125 SMF cable: 6.2 miles (10 km)
Transmitter wavelength per lane	1264.5 through 1277.5 nm 1284.5 through 1297.5 nm 1304.5 through 1317.5 nm 1324.5 through 1337.5 nm
Average launch power per lane	–7.6 through 2.4 dBm per lane Total maximum launch is 8.4 dBm
Total average launch power (maximum)	8.3 dBm
Average receive power per lane	13.7 through 2.3 dBm
Receiver saturation per lane	2.3 dBm
Receiver sensitivity per lane	–13.7 dBm