User ManUal
10
cHaPter 2
Fiber optic connectors
Zones
are a series of concentric circles that identify areas of interest on the connector end
face. The inner-most zones are more sensitive to contamination than the outer zones.
A.
Core
B.
Cladding
C.
Adhesive/epoxy
D.
Contact/Ferrule
Zones
ACCEPTANCE CRITERIA
are a series of failure thresholds that define contamination
limits for each zone.
Acceptance Criteria
ZONE NAME
(Diameter)
SCRATCHES
DEFECTS
A. CORE Zone
(0–25 μm)
none
none
B.
CLADDINg Zone
(25–120 μm)
no limit <= 3 μm
none > 3 μm
no limit < 2 μm
5 from 2–5 μm
none > 5 μm
C.
ADHESIVE Zone
(120–130 μm)
no limit
no limit
D.
CONTACT Zone
(130–250 μm)
no limit
none >= 10 μm
The tables below list the
ACCEPTANCE CRITERIA
standardized by the
International
Electrotechnical Commission (IEC)
for single-mode and multimode connectors as
documented in
IEC 61300-3-35 Ed. 1.0.
Single-Mode
ZONE NAME
(Diameter)
SCRATCHES
DEFECTS
A. CORE Zone
(0–65 μm)
no limit <= 5 μm
0 > 5 μm
4 <= 5 μm
none > 5 μm
B.
CLADDINg Zone
(65–120 μm)
no limit <= 5 μm
0 > 5 μm
no limit < 2 μm
5 from 2–5 μm
none > 5 μm
C.
ADHESIVE Zone
(120–130 μm)
no limit
no limit
D.
CONTACT Zone
(130–250 μm)
no limit
none >= 10 μm
Multimode
Zone Overlays
A
B
C
D
single-mode
Multimode
