Agilent Technologies 86038B User Manual page 318

318
To assess the projection of the emitted light beam you can use
an infrared sensor card. Hold the card approximately 5 cm from
the interface. The invisible emitted light is projected onto the
card and becomes visible as a small circular spot.
Optical single mode connections for high-power applications
(optical power levels above 100mW) require careful cleaning to
prevent the power density of burning dust or dirt into the fiber
causing permanent damage of the devices and/or connectors. If
this happens, measurements become inaccurate and non-
repeatable.
Preferred Procedure
Use the following procedure on most occasions.
1 Clean the interface 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 when there is greasy dirt on the interface:
1 Moisten a new cotton swab with isopropyl alcohol.
2 Clean the interface by rubbing the cotton swab over the
surface using a small circular movement.
3 Take a new, dry soft tissue and remove the alcohol, dissolved
sediment and dust, by rubbing gently over the surface using a
small circular movement.
4 Blow away any remaining lint with compressed air.
N O T E This procedures must be strictly followed for each part of the
optical connection (connector, connector interface and physical
connector interface).
The connection should be made immediately after cleaning and
N O T E
inspection to prevent the connection (connector, connector
interface and physical connector interface) from getting dusty
or dirty again.
N O T E Always make sure that the fiber end faces are properly cleaned
and unscratched before connection. The fiber end faces must be
visually inspected using a microscope with a magnification of at
least 400x. For recommended fiber inspection microscopes,
please refer to Agilent 's service team personnel.
Agilent 86038B Photonic Dispersion and Loss Analyzer, Second Edition