Interferometric measurement method for guide holes and fiber holes parallelism and position in multi-fiber ferrules
AssigneeSumix
InventorFarhad Towfiq
Life of this patent
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Abstract
An interferometric measurement method precisely determines parallelism and 3D position of guide pin holes and fiber holes in multi-fiber ferrules used in connectors. The parallelism and position are measured for the ferrule with inserted reference guide pins and reference fibers by scanning the ferrule from side in an interferometric system. Fiber hole deviations from designated locations on the ferrule end face and distance between the fiber holes and the guide pin holes are calculated as well.
Claims7
A method for interferometric measurement of guide holes' parallelism and guide hole position as well as fiber holes' parallelism and fiber hole position of multi-fiber optic ferrules used in connectors, the method comprising the steps of:
- inserting reference fibers into a number of the fiber holes and reference guide pins into the first and second guide pin holes of the ferrule;
- obtaining interferometric data from the inserted reference guide pins and reference fibers by scanning them from side by means of an interferometric microscope;
- calculating relative angles of the guide pins and determining system Z axis;
- calculating angles between each fiber hole and the Z axis;
- calculating deviations of fiber hole locations from designated locations, distance between the fiber holes and distance between the guide pin holes.
Dependencies are inferred from the claim text.