Notes:
1. Class 3R only exists if the maximum power is within five times the Accessible Emission
Limit (AEL) of Class 1.
In earlier editions of the IEC 60825 standard the following laser classes and
corresponding power limits were defined for wavelengths of 1310 nm and 1550 nm.
Laser class Wavelength Max. output power of laser radiation
1 1310 nm 8.85 mW +9.5 dBm
1550 nm 10 mW +10 dBm
3A 1310 nm 24 mW +13.8 dBm
1550 nm 50 mW +17 dBm
3B 1310 nm 500 mW +27 dBm
1550 nm 500 mW +27 dBm
4 1310 nm > 500 mW > +27 dBm
1550 nm > 500 mW > +27 dBm
Notes:
1. Corresponding laser warning labels can still be found on equipment manufactured before
publication of the IEC 60825-1 Ed. 1.2 (2001) standard.
Hazard level assignment
“Hazard level” refers to the potential hazard from laser emission at any location in an
end-to-end optical fiber communication system that may be accessible during service
or in the event of a failure. The assignment of hazard level uses the AELs for the
classes.
Hazard levels for optical transmission equipment are assigned in either of the following
two ways:
• the actual output power from the connector or fiber cut.
• if automatic power reduction is used, the output power at the connector or fiber cut
at one second after automatic power reduction takes place, provided that maximum
output and restart conditions are met.
Classification of optical telecommunication equipment
Optical telecommunication equipment is generally classified as IEC Class 1 or
FDA/CDRH Class I, because under normal operating conditions the transmitter ports
terminate on optical fiber connectors. These are covered by a front panel to ensure
protection against emissions from any energized, unterminated transmitter.
The circuit packs themselves, however, may be IEC Class 1 or 1M or FDA/CDRH
Class I or Class IIIb.
Safety
Laser product classification
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1-18
Alcatel-Lucent - Proprietary
See notice on first page
365-312-807R7.2
Issue 4, May 2007
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