2-19
2.Basic splicing operation｜Optical fiber splicing
2. Basic splicing operation
Symptom
Possible cause Troubleshooting Refer to
Kink or offset
There is dust on the V-groove
and bare fiber pads.
Clean the V-groove and bare
fiber pads. ▸See the illustra-
tions below.
▸P.3-1 Cleaning V-grooves,
P.3-2 Cleaning bare fiber
pads
Arc power is not optimum.
Perform an arc test to make
sure the splicer gives “Arc
OK”.
▸P.2-15 Arc test
The melt back distance is not
equal between the left and
right fibers.
Bulging
Overlap is too big. Decrease the Overlap.
▸P.4-6 Splice program
editable items
Arc power is not optimum.
Perform an arc test to make
sure the splicer gives “Arc
OK”.
▸P.2-15 Arc test
There is dust on the V-groove
and bare fiber pads.
Clean the V-groove and bare
fiber pads.▸ See the illustra-
tions below.
▸P.3-1 Cleaning V-grooves,
P.3-2 Cleaning bare fiber
pads
Neck-down
Overlap is too small. Increase the Overlap.
▸P.4-6 Splice program
editable items
Arc power is not optimum.
Perform an arc test to make
sure the splicer gives “Arc
OK”.
▸P.2-15 Arc test
There is dust on the V-groove
and bare fiber pads.
Clean the V-groove and bare
fiber pads.▸ See the illustra-
tions below.
▸P.3-1 Cleaning V-grooves,
P.3-2 Cleaning bare fiber
pads
Bubble
Prefusion time is too short. Increase the Prefusion time.
▸P.4-6 Splice program
editable items
There is dust on the fiber.
Cleave the fiber again.
▸Instruction manual that
came with the cleaver
you use.
The cleave angle of the fiber
exceeds the allowable limit.
White line
Arc power is not optimum.
Perform an arc test to make
sure the splicer gives “Arc
OK”.
▸P.2-15 Arc test
Prefusion time is too short. Increase the Prefusion time.
▸P.4-6 Splice program
editable items
Black line
There is dust on the fiber. Cleave the fiber again.
▸Instruction manual that
came with the cleaver
you use.
■ Splice error possible cause and troubleshootin
Cleaning V-groove and bare fiber pads
Do a visual check of the splice point viewed on the monitor. If any
symptoms below appear or an estimated loss is too high, read the
troubleshooting against the symptom and re-do the entire splicing
rocedures from the be
innin
.
A white line, black line or vertical line appears at the splice point when
MMF, dissimilar fibers or fibers with different diameters are spliced. But it
does not affect splice quality, such as splice loss, tensile strength, and etc.
Bare fiber pads
V-groove
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