However, damage may occur if an optical instrument such as a
microscope, magnifying glass, or eye loupe is used to stare at the
energized fiber end.
Laser Radiation
CAUTION
Laser hazard
Use of controls, adjustments, and procedures other than those
specified herein may result in hazardous laser radiation exposure.
Use controls, adjustments, and procedures specified in this
document.
Laser safety precautions
for enclosed systems
Under normal operating conditions, optical fiber telecommunication
systems are completely enclosed. Observe the following laser safety
precautions for enclosed systems:
•
Because of the potential for eye damage, technicians should not
stare into optical connectors or broken fibers.
•
Under no circumstance shall laser/fiber optic operations be
performed by a technician before satisfactorily completing laser
safety training.
•
Since viewing lightwave emission directly in excess of Class I/1
limits with an optical instrument such as an eye loupe greatly
increases the risk of eye damage, appropriate labels must appear
in plain view, in close proximity to the optical port on the
protective housing/access panel of the terminal equipment.
Laser safety precautions
for unenclosed systems
During service, maintenance, or restoration, an optical fiber
telecommunication system is considered unenclosed. Observe the
following laser safety precautions for unenclosed systems:
•
Only authorized, trained personnel shall be permitted to do
service, maintenance, and restoration. Avoid exposing the eye to
emissions from unterminated, energized optical connectors at
close distances. Laser modules associated with the optical ports
of laser circuit packs are typically recessed, which limits the
exposure distance. Optical port shutters and automatic power
reduction (APR), and automatic power shut down (APSD) are
engineering controls that are also used to limit the emissions.
Laser safety
Safety
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Lucent Technologies
365-372-333 R2.1
Issue 4, June 2005
