The condition and characteristics of fiber optic connectors greatly affects the performance of an installed fiber optic link. High connector loss (e.g., insertion loss), low return loss, or high reflectance will impair an application (i.e. 10GBASE-LRM) from running on a network. A high return loss is a good thing and usually results in low insertion loss. Let’s examine the differences between these three terms because they can be confusing.
