IEC 60825-2:2004/AMD2:2010

Amendment 2 - Safety of laser products - Part 2: Safety of optical fibre communication systems (OFCS)

Amendement 2 - Sécurité des appareils à laser - Partie 2: Sécurité des systèmes de télécommunication par fibres optiques (STFO)

General Information

• Status: Published
• Publication Date: 21-Sep-2010
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 31.260 - Optoelectronics. Laser equipment
• ICS: 33.180.01 - Fibre optic systems in general
• Technical Committee: TC 76 - Optical radiation safety and laser equipment
• Drafting Committee: WG 5 - TC 76/WG 5
• Current Stage: DELPUB - Deleted Publication
• Completion Date: 16-Mar-2021

Relations

• Amends: IEC 60825-2:2004 - Safety of laser products - Part 2: Safety of optical fibre communication systems (OFCS)
• Effective Date: 05-Sep-2023
• Revised: IEC 60825-2:2021 - Safety of laser products - Part 2: Safety of optical fibre communication systems (OFCSs)
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 60825-2 ®
Edition 3.0 2010-09
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
AMENDMENT 2
AMENDEMENT 2
Safety of laser products –
Part 2: Safety of optical fibre communication systems (OFCS)

Sécurité des appareils à laser –
Partie 2: Sécurité des systèmes de télécommunication par fibres optiques
(STFO)
IEC 60825-2:2004/A2:2010
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IEC 60825-2 ®
Edition 3.0 2010-09
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
AMENDMENT 2
AMENDEMENT 2
Safety of laser products –
Part 2: Safety of optical fibre communication systems (OFCS)

Sécurité des appareils à laser –
Partie 2: Sécurité des systèmes de télécommunication par fibres optiques
(STFO)
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
J
CODE PRIX
ICS 31.260; 33.180.01 ISBN 978-2-88912-176-2
– 2 – 60825-2 Amend. 2 © IEC:2010
FOREWORD
This amendment has been prepared by IEC technical committee 76: Optical radiation safety
and laser equipment
The text of this amendment is based on the following documents:
Enquiry draft Report on voting
76/409/CDV 76/419/RVC
Full information on the voting for the approval of this amendment can be found in the report
on voting indicated in the above table.
The committee has decided that the contents of this amendment and the base publication will
remain unchanged until the stability date indicated on the IEC web site under
"http://webstore.iec.ch" in the data related to the specific publication. At this date, the
publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
____________
Foreword
In the list of parts of the IEC 60825 series, delete the following:
Part 6: Safety of products with optical sources, exclusively used for visible information
transmission to the human eye
Part 7: Safety of products emitting infrared optical radiation, exclusively used for wireless
‘free air’ data transmission and surveillance
Replace the title of Part 8 as follows:
Part 8: Guidelines for the safe use of laser beams on humans
Add the title of the following new part:
Part 13: Measurements for classification of laser products
1 Scope and object
Add, after the sixth paragraph ("Throughout this part of IEC 60825., (LEDs) and optical
amplifiers.") the following new note:
NOTE 2 The optical hazard of light emerging from a fibre is determined by the wavelength and power emerging
from the fibre and the optical characteristics of the fibre. (See Annex A.).
Renumber the existing note as Note 1.

60825-2 Amend. 2 © IEC:2010 – 3 –
2 Normative references
Replace the existing reference and its amendments by the following:
IEC 60825-1:2007, Safety of laser products – Part 1: Equipment classification and
requirements
3.5
hazard level 1
Add to the end of the definition:
“. The level of radiation is measured with the conditions for Class 1 laser products (see
IEC 60825-1), but with condition 2 being as defined in clause 4.8.1 of this standard
(IEC 60825-2)”
3.6
hazard level 1M
Delete the final phrase of the existing definition as follows: “. . . whereby the level of radiation
is measured with the measurement conditions for Class 1M laser products (see IEC 60825-
1)”.
Add to the end of the definition (before the note):
“. The level of radiation is measured with the conditions for Class 1M laser products (see
IEC 60825-1), but with condition 2 being as defined in clause 4.8.1 of this standard
(IEC 60825-2)”
3.7
hazard level 2
Add to the end of the definition (before the note):
“. The level of radiation is measured with the conditions for Class 2 laser products (see
IEC 60825-1), but with condition 2 being as defined in clause 4.8.1 of this standard
(IEC 60825-2)”
3.8
hazard level 2M
Delete the final phrase of the existing definition as follows: “. . . whereby the level of radiation
is measured with the measurement conditions for Class 2M laser products (see IEC 60825-
1)”.
Add to the end of the definition (before the note):
". The level of radiation is measured with the conditions for Class 2M laser products (see
IEC 60825-1), but with condition 2 being as defined in clause 4.8.1 of this standard
(IEC 60825-2)”
3.9
hazard level 3R
Add to the end of the definition (before the note):
". The level of radiation is measured with the conditions for Class 3R laser products (see
IEC 60825-1), but with condition 2 being as defined in clause 4.8.1 of this standard
(IEC 60825-2)”
– 4 – 60825-2 Amend. 2 © IEC:2010
3.10
hazard level 3B
Add to the end of the definition:
". The level of radiation is measured with the conditions for Class 3B laser products (see
IEC 60825-1), but with condition 2 being as defined in clause 4.8.1 of this standard
(IEC 60825-2)”
3.11
hazard level 4
Add to the end of the definition (before the note):
".The level of radiation is measured with the conditions for Class 3B laser products (see
IEC 60825-1), but with condition 2 being as defined in clause 4.8.1 of this standard
(IEC 60825-2)”
4.5.4 Disabling of the APR
Add, after item 6), the following new text:
7) it shall not be possible to disable the APR permanently – the APR must automatically
re-enable (see also note 3);
8) it shall only be possible to disable APR at the transmitting equipment (i.e. remote
disabling of the APR is not normally permitted), except when in direct communication
with persons (possibly at remote locations) likely to be exposed to higher levels of
radiation than before the APR is disabled.
NOTE 1 Consideration should be given to the fact that Raman systems may also emit high power from the
receive termination.
9) a clear and unambiguous warning shall be displayed continuously while the APR
remains disabled;
10) manual start-up or re-start of high power systems with APR disabled
It is recognised that systems utilising high optical powers (by their very nature) must use high
powers to ensure continuity - otherwise no signal will be received at the far end. Therefore it
is permitted to use high powers (class 4) at initial system start-up, provided this is done by
trained personnel under defined conditions.
Every effort must be made to ensure system continuity (i.e. OTDR continuity testing from both
ends of the system) and to ensure personnel are not exposed to class 3B or class 4 radiation.
This can also be done by rigorous administrative controls.
Renumber existing Notes 1 and 2 as Notes 2 and 3 respectively.
Add, after existing Note 2, the following new note:
NOTE 4 One hour is suggested as a suitable time after which the APR should re-enable.
4.6 Labelling or marking
Table 1 – Marking in unrestricted locations (added in Amendment 1 (2006))
In table footnote b, change “Figure 14” to read “Figure 1”.
In table footnote e, change “Figure 15” to read “Figure 2” and “Figure 14” to read “Figure 1”.

60825-2 Amend. 2 © IEC:2010 – 5 –
Table 2 – Marking in restricted locations (added in Amendment 1 (2006))
Delete Note 1 and renumber the remaining notes.
Replace the existing text of table footnote a by the following:
Warning label according to Figure 1 of IEC 60825-1.
In table footnote d, change “Figure 15” to read “Figure 2” and “Figure 14” to read “Figure 1”.
Table 3 – Marking in controlled locations (added in Amendment 1 (2006))
Replace the existing text of table footnote a by the following:
Warning label according to Figure 1 of IEC 60825-1.
In table footnote d, change “Figure 15” to read “Figure 2” and “Figure 14” to read “Figure 1”.
4.8.1
Add, after the second sentence of the first paragraph, the following new paragraphs:
For wavelengths above 1 400 nm, condition 2 measurements to establish hazard levels shall
be made with a 7 mm aperture at a distance of 28 mm from the end of the fibre (this simulates
a x18 magnifier).
For all other wavelengths, condition 2 measurements to establish hazard levels shall be made
with a 7 mm aperture at a distance of 70 mm from the end of the fibre (this simulates a x7
magnifier).
In addition to the above, and for all wavelengths, the total emission from the fibre for HL 3B
systems shall not exceed the AEL of class 3B.
Retain the remaining sentence in the first paragraph as a separate paragraph.
Annex A – Rationale
In the first sentence of the first paragraph, replace “…are covered by IEC 60825-1” by “…are
covered by IEC 60825-1 and IEC/TR 60825-14.”
In the last sentence of the first paragraph, change “.included in the scope of IEC 60825-1.)”
to read “excluded from the scope of IEC 60825-1.)”
Add after the final paragraph, a new paragraph as follows:
The changes to IEC 60825-2:2004 and its amendment are
a) a revision of the references to IEC 60825-1 made necessary by the re-ordering of the
latest version of IEC 60825-1, and
b) changes in the measurements made to ensure that safety is retained when fibre ends
are examined through medium to high power magnifiers and/or microscopes, as
sometimes used in the telecommunications industry.

– 6 – 60825-2 Amend. 2 © IEC:2010
Annex D – Application notes for the safe use of OFCS
D.3 OFCS power limits
Add, after the existing text (between the existing note and Table D.1,) the following new text:
The following aperture diameter and measuring distances are to be used:
• 7 mm at 70 mm for wavelengths < 1 400 nm
• 7 mm at 28 mm for wavelengths > 1 400 nm
NOTE 2 In the latter case for wavelengths > 1 400 nm, for the vast majority of cases this condition will measure
all the emission from the fibre, and will therefore account for any level of magnification.
NOTE 3 An alternative to the latter condition for wavelengths > 1 400 nm is simply to measure the total emission
from the fibre while recognising that in certain cases this may result in an over estimate of the actual hazard.
NOTE 4 For HL 3B systems the total emission from the fibre shall be limited to be less than the AEL of class 3B
(thus effectively capping the optic
...