(800) 473-4237 / 508-992-6464 sales@focenter.com


What causes the Apex of a radius to be imperfect, to be off-center? 




Angles do.  Angles create Apex Offset.  Apex Offset is the result of polishing at an angle.  The ferrule being at an angle to the polishing surface during polishing  (for whatever reason—-imprecise hole bore in a polishing fixture, uneven polishing surface, contamination on ferrule OD, etc.) will cause the Apex of that radius to be cut off-set from the ferrule center.   The larger the angle, the larger the Apex Offset.  There is a mathematical relationship between Angle, Apex Offset and Radius:   Tan (Angle) = Apex/Radius.  If we know any two values, we can mathematically calculate the third.    This applies to APC ferrules as well, but with one additional factor:  Key Error.


READ THE FULL BLOG ARTICLE HERE: Polished Connector Geometries, APC



  Answered by AskFOC Technical Team November 8 , 2018



Have a technical question for Fiber Optic Center?

Please email your question to AskFOC@focenter.com and we will respond ASAP.

In addition to replying, we will post your question and our answer here on the AskFOC page.  Everyone remains anonymous when we post so feel comfortable asking your questions.  You can also search to see if your question has already been answered in the FAQs section below.


Share this:
Kathleen Skelton

About Kathleen Skelton

Kathleen Skelton, as FOC's Director of Strategic Marketing, utilizes her expertise in business development, online strategy, market planning, digital best practices, standard operating procedure development, and content management. A graduate of Curry College, she holds degrees in Communications and Education, English and Psychology. Kathleen resides outside of Boston, MA with her husband and four children. Follow @KATHLEENSKELTON