Chapter 6
Fiber Optics Diagnostics (TRACETEK)
There are many creative ways to clean connectors, and we’ve seen quite a few of
these methods used in the field. It’s also common that test technicians do not take the
time to visually inspect or clean connectors before testing the link. Some technicians
will check for cleanliness with their naked eyes, but the human eye cannot possibly
see the type of contaminants that affect fiber-optic connectors. Cleaning is a mundane
but very important task.
To illustrate this point, we have provided some magnified images of connectors
cleaned with various methods.
Dirty
connector
Wiped
“clean”
with finger
“Cleaned”
on shirt
Cleaned
w/IDEAL
cleaning kit
Again, using the same fiber, but before the connectors were cleaned, the figure above
displays the results when the optimal TRACETEK resolution mode is not selected. In
this case the Medium Resolution mode was used. The resulting Fresnels are much
higher than before and the “Batman ears” are caused by the saturation of the
receiver. This is due to excessive reflection.
6-7
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