Reading the SFP + DWDM datasheet, it is not clear to me what is the reach of non-tunables SFP+ as DWDM-SFP10G-61.41=
I understand that the ditance is limited by the loss of optical fiber and chromatic dispersion but, what could be the distance in the best of cases? 40 kilometers?. 80 Km?
The same thing happens to me by reviewing the SFP DWDM's datasheet.:
https://www.cisco.com/c/en/us/products/collateral/interfaces-modules/dwdm-transceiver-modules/product_data_sheet0900aecd80582763.html
It indicates: "When shorter distances of single-mode fiber are used, it might be necessary to insert an optical attenuator in the link". Shorter than how much?
Thanks in advance.
P.D: Sorry my poor english
