Laser Safety And Classifications And Electrostatic Discharge (Esd) Considerations; Laser Classes - Alcatel-Lucent 1665 Installation Manual

Laser safety and classifications and Electrostatic
Discharge (ESD) considerations

Laser classes

The maximum output power of laser radiation depends on the type of laser diode used.
The international standards IEC-60825 or DIN/EN 60825 define the maximum output
power of laser radiation for each laser class in accordance with the wavelength.
Table A-1
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:
actual output power from the connector or fiber cut.
•
if automatic power reduction is used, 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, 1M or 3R or FDA/CDRH Class I or IIIb.
............................................................................................................................................................................................................................................................
A - 1 0
Laser Classes
Laser class Wavelength
1 1310 nm
1550 nm
3R 1310 nm
1550 nm
3B 1310 nm
1550 nm
Laser product classification
Maximum Output Power of
Laser Radiation
8.85 mW
10 mW
24 mW
50 mW
0.5 W
0.5 W
365-372-304R7.1
Issue 1, November 2007