Troubleshooting with Fiber Microscopes from Fluke Networks Whether troubleshooting fiber optic connectors during termination, checking patch cords for debris or damaged endfaces, or inspecting connectors mounted inside patch panels, enclosures and optical hardware, Fluke Networks has a microscope that meets your need.

Sample fiber endfaces

Below are some examples of clean and dirty fiber endfaces.

What to do if endfaces are dirty?

Solution: Clean fiber using the proper fiber cleaning techniques as described in the Fluke Networks Cleaning Kit (NF430).

Chipped endfaces?

Solution: Visually determine if chips are within acceptable limits, up to 5% of the outside edge of the fiber cladding may generally be chipped, as this is a common result of the polishing process. Any chips on the fiber core are not acceptable. If chips are beyond acceptable limits, the fiber should be re-terminated.

Scratched and epoxy bleed fiber endface?

Solution: If the endface is scratched, has polishing debris or has excess epoxy bleed, you'll need to repolish with fine lapping paper until visual inspection shows scratches and debris gone.

Cracked or shattered fiber endface?

Solution: If the endface is cracked or shattered than you'll need to re-terminate. Cracks can spread, making the endface unacceptable.