Question

You've been handed a fiber with a 1.25-mm ferrule that requires a connector. What is the most commonly used connector for this ferrule size?

Answer 1

Local connector LC

Step-by-step explanation:

If the diameter of the fiber is 1.25 mm ferrule then the Local connector LC or the Lucent Connector would be used. The International Electrotechnical Commission standard is IEC 61754-20 with a snap type coupling.

They are generally used in Small factor plug-gable transceivers, also they are used in XFP transceivers.