IEC 61290-7-1:2007

INTERNATIONAL IEC
STANDARD
CEI
61290-7-1
NORME
Second edition
INTERNATIONALE
Deuxième édition
2007-04
Optical amplifiers –
Test methods –
Part 7-1:
Out-of-band insertion losses –
Filtered optical power meter method

Amplificateurs optiques –
Méthodes d’essai –
Partie 7-1:
Pertes d’insertion hors-bande –
Méthode par puissance-mètre optique filtré
Reference number
Numéro de référence
IEC/CEI 61290-7-1:2007
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INTERNATIONAL IEC
STANDARD
CEI
61290-7-1
NORME
Second edition
INTERNATIONALE
Deuxième édition
2007-04
Optical amplifiers –
Test methods –
Part 7-1:
Out-of-band insertion losses –
Filtered optical power meter method

Amplificateurs optiques –
Méthodes d’essai –
Partie 7-1:
Pertes d’insertion hors-bande –
Méthode par puissance-mètre optique filtré
PRICE CODE
K
CODE PRIX
Commission Electrotechnique Internationale
International Electrotechnical Commission
МеждународнаяЭлектротехническаяКомиссия
For price, see current catalogue
Pour prix, voir catalogue en vigueur

– 2 – 61290-7-1 © IEC:2007
CONTENTS
FOREWORD.3
INTRODUCTION.5

1 Scope and object .6
2 Normative references.6
3 Abbreviated terms.6
4 Apparatus.6
5 Test sample.7
6 Procedure.8
7 Calculation .8
8 Test results .8
9 Electromagnetic compatibility (EMC) requirements .9

Bibliography .10

Figure 1 – Typical arrangement of the optical filter test apparatus for out-of-band
insertion loss measurements .7

61290-7-1 © IEC:2007 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
OPTICAL AMPLIFIERS –
TEST METHODS –
Part 7-1: Out-of-band insertion losses –
Filtered optical power meter method

FOREWORD
1) The IEC (International Electrotechnical Commission) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of the IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, the IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
in the subject dealt with may participate in this preparatory work. International, governmental and non-
governmental organizations liaising with the IEC also participate in this preparation. The IEC collaborates
closely with the International Organization for Standardization (ISO) in accordance with conditions determined
by agreement between the two organizations.
2) The formal decisions or agreements of the IEC on technical matters express, as nearly as possible, an
international consensus of opinion on the relevant subjects since each technical committee has representation
from all interested National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international unification, IEC National Committees undertake to apply IEC International
Standards transparently to the maximum extent possible in their national and regional standards. Any
divergence between the IEC Standard and the corresponding national or regional standard shall be clearly
indicated in the latter.
5) The IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with one of its standards.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 61290-7-1 has been prepared by subcommittee 86C: Fibre optic
systems and active devices, of IEC technical committee 86: Fibre optics.
This second edition cancels and replaces the first edition published in 1998 and constitutes a
technical revision. The main significant changes are the following:
a) the title has been changed to be consistant with other documents in the IEC 61290
series;
b) the applicability has been extended to all commercially available optical amplifiers - not
just optical fiber amplifiers;
c) Clause 9, EMC, has been added.
This standard shall be used in conjunction with IEC 61291-1. It was established on the basis of
the second (2006) edition of that standard.

– 4 – 61290-7-1 © IEC:2007
The text of this standard is based on the following documents:
CDV Report on voting
86C/726/CDV 86C/741/RVC
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
A list of all parts of the IEC 61290 series, published under the general title Optical amplifiers –
Test methods, can be found on the IEC website.
The committee has decided that the contents of this publication will remain unchanged until the
maintenance result 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.
61290-7-1 © IEC:2007 – 5 –
INTRODUCTION
This International Standard is devoted to the subject of optical amplifiers. The technology of
optical amplifiers is still rapidly evolving, hence amendments and new additions to this
standard can be expected.
– 6 – 61290-7-1 © IEC:2007
OPTICAL AMPLIFIERS –
TEST METHODS –
Part 7-1: Out-of-band insertion losses –
Filtered optical power meter method

1 Scope and object
This part of IEC 61290 applies to optical amplifiers (OAs) using active fibres presently
commercially available containing rare-earth dopants.
The object of this standard is to establish uniform requirements for accurate and reliable
measurements, by means of the filtered optical power meter test method, of the following OA
parameters, as defined in IEC 61291-1:
a) out-of-band insertion loss;
b) out-of-band reverse insertion loss.
NOTE 1 The out-of-band insertion loss of an OA is highly dependent on the amplifier configuration and the out-of-
band wavelength.
NOTE 2 All numerical values followed by (‡) are suggested values.
2 Normative references
The following referenced documents are indispensable for the application of this document. For
dated references, only the edition cited applies. For undated references, the latest edition of
the referenced document (including any amendments) applies.
IEC 61291-1, Optical amplifiers – Part 1: Generic specification
3 Abbreviated terms
Each abbreviation introduced in this standard is explained in the text at least the first time it
appears. However, for an easier understanding of the whole text, the following is a list of all
abbreviations used in this standard:
OA   Optical amplifier
EMC  Electromagnetic compatibility
ESD  Electrostatic discharge
4 Apparatus
A scheme of the measurement set-up is given in Figure 1.

61290-7-1 © IEC:2007 – 7 –
Optical
isolator
Optical
OPTOpticICal AL C A B
power
source
SOURCE
meter
Optical
filter
IEC  664/98
Figure 1a – Optical filter calibration
Optical
isolator
Optical
C
A B
Optical
power
OA
source
meter
OA Optical
under test filter
IEC  665/98
Figure 1b – Out-of-band insertion loss measurement

Figure 1 – Typical arrangement of the optical filter test apparatus
for out-of-band insertion loss measurements
The test equipment listed below, with the required characteristics, is needed:
a) optical source: the optical source shall generate a light at the out-of-band wavelength
specified in the relevant detail specification. Unless otherwise specified, the optical source
shall emit a continuous wave with the full width at half maximum of the spectrum narrower
than 1 nm (‡);
b) optical isolator: the polarization-dependent loss variation of the isolator, at the out-of-band
wavelength, shall be better than 0,2 dB (‡). Optical isolation shall be better than 40 dB (‡).
The reflectance from this device sh
...