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Cleaning Information
How to clean connectors
E.7 How to clean connectors
Cleaning connectors is difficult as the core diameter of a single-
mode fiber is only about 9
µm. This generally means you cannot
see streaks or scratches on the surface. To be certain of the
condition of the surface of your connector and to check it after
cleaning, you need a microscope.
In the case of scratches, or of dust that has been burnt onto the
surface of the connector, you may have no option but to polish the
connector. This depends on the degree of dirtiness, or the depth of
the scratches. This is a difficult procedure and should only be
performed by skilled personal, and as a last resort as it wears out
your connector.
WARNING Never look into the end of an optical cable that is connected to an active
source.
To assess the projection of the emitted light beam you can use an
infrared sensor card. Hold the card approximately 5 cm from the
output of the connector. The invisible emitted light is project onto
the card and becomes visible as a small circular spot.
Preferred Procedure
Use the following procedure on most occasions.
1. Clean the connector by rubbing a new, dry cotton-swab over the
surface using a small circular movement.
2. Blow away any remaining lint with compressed air.
Procedure for Stubborn Dirt
Use this procedure particularly when there is greasy dirt on the
connector:
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