40G and 100G optics options

Baldur Norddahl baldur.norddahl at gmail.com
Mon Dec 18 17:01:39 CST 2017


What options are available for 40G QSFP+ and 100G QSFP28 for 10+ km links?

I see a lot of switches offered with QSFP+ and QSFP28. But I do not seem 
to find the necessary optics to build the links I want.

For example, take a look at the options available at Fiberstore:


Generic Compatible 40GBASE-LR4 and OTU3 QSFP+ 1310nm 10km LC Transceiver 
for SMF

Generic Compatible 40GBASE-ER4 and OTU3 QSFP+ 1310nm 40km LC Transceiver 
for SMF


Generic Compatible QSFP28 100GBASE-LR4 1310nm 10km Transceiver

Generic Compatible QSFP28 100GBASE-ER4 1310nm 40km Transceiver

That is it. Four modules and the 40km are prohibitive expensive. The 
situation at other vendors appears to be similar.

I need stronger modules that can do more than 10 km without being 
extremely expensive. Or DWDM modules in the 1550 nm band so I can use 
external amplifiers. Am I looking in the wrong place? Is this expected 
to be available in the near future?



More information about the NANOG mailing list