Alcatel-Lucent 1643 AMS User's Operation Manual page 45

Safety
IEC Customer Laser Safety Guidelines
Alcatel-Lucent declares that this product is compliant with all essential safety
requirements as stated in IEC 60825-Part 1 and 2 "Safety of laser products" and
"Safety of optical fibre telecommunication systems". Futhermore Alcatel-Lucent
declares that the warning statements on labels on this equipment are in accordance
with the specified laser radiation class.
Optical Safety Declaration (if laser modules used)
Alcatel-Lucent declares that this product is compliant with all essential safety
requirements as stated in IEC 60825-Part 1 and 2 "Safety of Laser Products" and
"Safety of Optical Fiber Telecommunication Systems". Furthermore Alcatel-Lucent
declares that the warning statements on labels on this equipment are in accordance
with the specified laser radiation class.
Potential sources of danger
Beware of the following potential sources of danger which will remain despite all
safety measures taken:
• Laser radiation can cause damage to the skin and eyes.
• Laser radiation from optical transmission systems is in a wavelength range that is
invisible to the human eye.
Lasers and Eye Damage
The optical energy emitted by laser and high-radiance LEDs in the 400-1400 nm range
may cause eye damage if absorbed by the retina. When a beam of light enters the eye,
the eye magnifies and focuses the energy on the retina magnifying the irradiance. The
irradiance of the energy that reaches the retina is approximately 105, or 100,000 times
more than at the cornea and, if sufficiently intense, may cause a retinal burn.
The damage mechanism at the wavelengths used in an optical fiber telecommunications
is thermal in origin, i.e., damage caused by heating. Therefore, a specific amount of
energy is required for a definite time to heat an area of retinal tissue. Damage to the
retina occurs only when one looks at the light long enough that the product of the
retinal irradiance and the viewing time exceeds the damage threshold. Optical energies
above 1400 nm cause corneal and skin burns, but do not affect the retina. The
thresholds for injury at wavelengths greater than 1400 nm are significantly higher than
for wavelengths in the retinal hazard region.
Laser Safety Precautions for Optical Fiber Telecommunication Systems
In its normal operating mode, an optical fiber telecommunication system is totally
enclosed and presents no risk of eye injury. It is a Class I/1 system under the FDA and
IEC classifications.
The fiber optic cables that interconnect various components of an optical fiber
telecommunication system can disconnect or break, and may expose people to laser
emissions. Also, certain measures and maintenance procedures may expose the
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365-312-807R7.2
Issue 4, May 2007
Alcatel-Lucent - Proprietary
See notice on first page
Laser safety
1-13