Abstract: Recent wide-scale deployment of APC connectors in the outside plant for FTTH
initiatives has forced connector manufacturers to consider reliability issues of these
connectors. Angled connectors exhibit two phenomena not found in non-angled
connectors: First, the lower ferrule endface radius of angled connectors makes the
connector more susceptible to permanent fiber withdrawal at elevated temperatures.
Second, any rotation of the ferrule in angled connectors will increase the apex offset of the
connector. These phenomena may result in loss of physical contact between the fibers of a
mated connector pair. This air gap may increase reflectance and insertion loss, reducing
system reliability. The air gap may also allow...