Fluke Versiv Series User Manual page 137

Versiv Series Cabling Certification Product Family
Users Manual
126
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Rings: On single fiber endfaces, the rings identify the core,
cladding, adhesive, and contact zones. Figure 50 shows the zones
on a single fiber endface. On MPO endfaces, the rings identify the
core and cladding zones.
Core
Cladding
Adhesive
Contact
Figure 50. Zones on a Single Fiber Endface
The Core zone is the optical fiber. This area typically has a
•
diameter of 9 μm for single-mode fiber or 50 μm or 62.5 μm
for multimode fiber.
The Cladding zone is the area between the inner, green ring
•
and the Core zone. The cladding is a layer of reflective
material around the core that keeps the optical signal in the
core.
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