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How to clean metal filters or attenuator gratings
Agilent DFB Laser Source Module User's Guide
This kind of device is extremely fragile. A misalignment of the
grating leads to inaccurate measurements. Never touch the
surface of the metal filter or attenuator grating. Be very careful
when using or cleaning these devices. Do not use cotton swabs
or soft tissues, as there is the danger that you cannot remove
the lint and that the device will be destroyed by becoming
mechanically distorted.
Preferred Procedure
Use the following procedure on most occasions.
Use compressed air at a distance and with low pressure to
1
remove any dust or lint.
Procedure for Stubborn Dirt
Do not use an ultrasonic bath as this can damage your device.
Use this procedure when there is greasy dirt on the device:
Put the optical device into a bath of isopropyl alcohol, and
1
wait at least 10 minutes.
Remove the fluid using compressed air at some distance and
2
with low pressure. If there are any streaks or drying stains
on the surface, repeat the whole cleaning procedure.
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