SIST EN 61290-3-3:2014

Optical amplifiers - Test methods - Part 3-3: Noise figure parameters - Signal power to total ASE power ratio

This part of IEC 61290-3 applies to all commercially available single channel optical amplifiers (OAs), including OAs using optically pumped fibres (OFAs) based on either rare-earth doped fibres or on the Raman effect, semiconductor optical amplifier modules (SOA modules) and planar optical waveguide amplifiers (POWAs). More specifically, it applies to single channel OAs placed before optical receivers, where there are no optical bandpass filtering elements placed between the OA and the receiver.
The object of this part of IEC 61290-3 is to establish uniform requirements for accurate and reliable measurement of the ratio of the signal output power to the total ASE power generated by the OA in the optical bandwidth of the receiver. This quantity is a measure of the spontaneous-spontaneous beat noise at the receiver, and is correlated to the spontaneousspontaneous
noise factor of the OA, Fsp-sp, as defined in IEC 61290-3 and IEC 61291-1. IEC 61290-3-1 describes a measurement method, using an optical spectrum analyzer, OSA, for the signal-spontaneous noise factor Fsig−sp but does not describe a method for measuring Fsp-sp. IEC 61290-3-2 describes a measurement method, using an electrical spectrum analyzer (ESA), for the total noise factor Fsp-sp + Fsig-sp. However, this method does not allow Fsp-sp to be measured separately, and therefore does not provide a means of directly quantifying the effect of spontaneous-spontaneous beat noise at the receiver. This part of IEC 61290-3 complements IEC 61290-3-1 and IEC 61290-3-2 in that it provides such a means. Two measurement methods are provided for the ratio of the signal output power to the total ASE power. The first method uses an OSA, while the second method uses a bandpass filter and an optical power meter.

Lichtwellenleiter-Verstärker – Prüfverfahren–- Teil 3-3: Rauschzahlparameter – Verhältnis der Signalleistung zur Gesamt-ASE-Leistung

Amplificateurs optiques - Méthodes d’essais - Partie 3-3: Paramètres du facteur de bruit - Rapport puissance du signal sur puissance totale d'ESA

La CEI 61290-3-3:2013 applique à tous les amplificateurs optiques (AO) monocanaux disponibles commercialement, y compris les AO utilisant des fibres pompées optiquement (OFA) basées soit sur des fibres dopées aux terres rares, soit sur l'effet Raman, les amplificateurs optiques à semiconducteurs (AOS) et les amplificateurs optiques à guide d'onde planaire (POWA). Elle s'applique plus particulièrement aux AO monocanaux placés devant des récepteurs optiques, lorsqu'il n'y a pas d'élément de filtrage optique passe bande placé entre l'AO et le récepteur. L'objet de la présente partie de la CEI 61290-3 est de déterminer des exigences uniformes de mesure précise et fiable du rapport de la puissance de sortie du signal sur la puissance totale d'émission spontanée amplifiée (ESA) générée par l'AO (amplificateur optique) dans la bande passante optique du récepteur. Cette quantité est une mesure du bruit de battement spontané-spontané au niveau du récepteur et elle est corrélée avec le facteur de bruit spontané-spontané de l'AO, Fsp-sp, selon les définitions de la CEI 61290-3 et de la CEI 61291-1.  Mots clés: amplificateurs optiques (AO) monocanaux, amplificateurs optiques à semiconducteurs (AOS), amplificateurs optiques à guide d'onde planaire (POWA), mesure pré du rapport de la puissance de sortie du signal sur la puissance totale d'émission spontanée amplifiée (ESA) générée par l'AO (amplificateur optique) dans la bande passante optique du récepteur

Optični ojačevalniki - Preskusne metode - 3-3. del: Parametri šumnega števila - Razmerje med močjo signala in celotno močjo ASE (IEC 61290-3-3:2013)

General Information

• Status: Published
• Publication Date: 05-Mar-2014
• ICS: 33.180.30 - Optic amplifiers
• Technical Committee: MOC - Mobile Communications
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 27-Feb-2014
• Due Date: 04-May-2014
• Completion Date: 06-Mar-2014
• Ref Project: EN 61290-3-3:2014 - Optical amplifiers - Test methods - Part 3-3: Noise figure parameters - Signal power to total ASE power ratio

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 61290-3-3:2014
01-april-2014
2SWLþQLRMDþHYDOQLNL3UHVNXVQHPHWRGHGHO3DUDPHWULãXPQHJDãWHYLOD
5D]PHUMHPHGPRþMRVLJQDODLQFHORWQRPRþMR$6(,(&
Optical amplifiers - Test methods - Part 3-3: Noise figure parameters - Signal power to
total ASE power ratio
Ta slovenski standard je istoveten z: EN 61290-3-3:2014
ICS:
33.180.30 2SWLþQLRMDþHYDOQLNL Optic amplifiers
SIST EN 61290-3-3:2014 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 61290-3-3:2014

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SIST EN 61290-3-3:2014


EUROPEAN STANDARD
EN 61290-3-3

NORME EUROPÉENNE
February 2014
EUROPÄISCHE NORM

ICS 33.180.30



English version


Optical amplifiers -
Test methods -
Part 3-3: Noise figure parameters -
Signal power to total ASE power ratio
(IEC 61290-3-3:2013)



Amplificateurs optiques - Lichtwellenleiter-Verstärker –
Méthodes d’essais - Prüfverfahren -
Partie 3-3: Paramètres du facteur Teil 3-3: Rauschzahlparameter -
de bruit - Verhältnis der Signalleistung zur Gesamt-
Rapport puissance du signal sur ASE-Leistung
puissance totale d'ESA (IEC 61290-3-3:2013)
(CEI 61290-3-3:2013)




This European Standard was approved by CENELEC on 2013-12-12. CENELEC members are bound to comply
with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard
the status of a national standard without any alteration.

Up-to-date lists and bibliographical references concerning such national standards may be obtained on
application to the CEN-CENELEC Management Centre or to any CENELEC member.

This European Standard exists in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CENELEC member into its own language and notified
to the CEN-CENELEC Management Centre has the same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus,
the Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany,
Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland,
Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

CEN-CENELEC Management Centre: Avenue Marnix 17, B - 1000 Brussels


© 2014 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 61290-3-3:2014 E

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SIST EN 61290-3-3:2014
EN 61290-3-3:2014 - 2 -

Foreword
The text of document 86C/1121/CDV, future edition 1 of IEC 61290-3-3, prepared by SC 86C, "Fibre
optic systems and active devices", of IEC/TC 86, "Fibre optics" was submitted to the IEC-CENELEC
parallel vote and approved by CENELEC as EN 61290-3-3:2014.

The following dates are fixed:
(dop) 2014-09-12
• latest date by which the document has
to be implemented at national level by
publication of an identical national
standard or by endorsement
(dow) 2016-12-12
• latest date by which the national

standards conflicting with the
document have to be withdrawn

Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such
patent rights.

Endorsement notice
The text of the International Standard IEC 61290-3-3:2013 was approved by CENELEC as a
European Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standards
indicated:
IEC 61290-3-1 NOTE  Harmonized as EN 61290-3-1.
IEC 61290-3-2 NOTE  Harmonized as EN 61290-3-2.

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SIST EN 61290-3-3:2014
- 3 - EN 61290-3-3:2014

Annex ZA
(normative)

Normative references to international publications
with their corresponding European publications

The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.

NOTE  When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD
applies.

Publication Year Title EN/HD Year

IEC 61290-3 - Optical amplifiers - Test methods - EN 61290-3 -
Part 3: Noise figure parameters


IEC 61291-1 2012 Optical amplifiers - EN 61291-1 2012
Part 1: Generic specification

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SIST EN 61290-3-3:2014

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SIST EN 61290-3-3:2014




IEC 61290-3-3

®


Edition 1.0 2013-11




INTERNATIONAL



STANDARD




NORME



INTERNATIONALE
colour

inside










Optical amplifiers – Test methods –

Part 3-3: Noise figure parameters – Signal power to total ASE power ratio




Amplificateurs optiques – Méthodes d’essais –

Partie 3-3: Paramètres du facteur de bruit – Rapport puissance du signal sur

puissance totale d'ESA















INTERNATIONAL

ELECTROTECHNICAL

COMMISSION


COMMISSION

ELECTROTECHNIQUE

PRICE CODE
INTERNATIONALE

CODE PRIX Q


ICS 33.180.30 ISBN 978-2-8322-1173-1



Warning! Make sure that you obtained this publication from an authorized distributor.

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale

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SIST EN 61290-3-3:2014
– 2 – 61290-3-3 © IEC:2013
CONTENTS
FOREWORD . 3
1 Scope and object . 5
2 Normative references . 5
3 Terms, definitions and abbreviations . 5
3.1 Terms and definitions . 5
3.2 Abbreviations . 6
4 Background . 7
5 Apparatus . 8
5.1 Measurement using an OSA . 8
5.2 Measurement using a bandpass filter and an optical power meter . 9
6 Test sample . 11
7 Procedure . 11
7.1 General . 11
7.2 Measurement using an OSA . 11
7.2.1 Calibration . 11
7.2.2 Measurement . 12
7.3 Measurement using a bandpass filter and an optical power meter . 13
7.3.1 General. 13
7.3.2 Calibration . 13
7.3.3 Measurement . 13
8 Calculations . 14
9 Test results . 14
Annex A (informative) Signal power to total ASE power ratio – Dependence on signal
input power, wavelength and output power. 15
Bibliography . 17

Figure 1 – Test set-up for OSA calibration and for measuring signal input power and
source spontaneous emission power . 8
Figure 2 – Test set-up for measuring signal output power and ASE power using an OSA. 8
Figure 3 – Test set-ups for filter calibration and measuring the signal input power . 10
Figure 4 – Test set-ups for measuring output signal power and ASE power using a filter
and an optical power meter . 10
Figure A.1 – The dependence of Sig_ASE on signal input power . 15
Figure A.2 – The ASE spectrum for two different signal wavelengths . 16
Figure A.3 – Sig_ASE as a function of output power for different signal wavelength . 16

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SIST EN 61290-3-3:2014
61290-3-3 © IEC:2013 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________

OPTICAL AMPLIFIERS –
TEST METHODS –

Part 3-3: Noise figure parameters –
Signal power to total ASE power ratio

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of 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, 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. 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 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 IEC 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 uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
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 61290-3-3 has been prepared by subcommittee 86C: Fibre optic
systems and active devices, of IEC technical committee 86: Fibre optics.
The text of this standard is based on the following documents:
CDV Report on voting
86C/1121/CDV 86C/1184/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.

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SIST EN 61290-3-3:2014
– 4 – 61290-3-3 © IEC:2013
A list of all parts in 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
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.

IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates
that it contains colours which are considered to be useful for the correct understanding
of its contents. Users should therefore print this document using a colour printer.

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SIST EN 61290-3-3:2014
61290-3-3 © IEC:2013 – 5 –
OPTICAL AMPLIFIERS –
TEST METHODS –

Part 3-3: Noise figure parameters –
Signal power to total ASE power ratio



1 Scope and object
This part of IEC 61290-3 applies to all commercially available single channel optical amplifiers
(OAs), including OAs using optically pumped fibres (OFAs) based on either rare-earth doped
fibres or on the Raman effect, semiconductor optical amplifier modules (SOA modules) and
planar optical waveguide amplifiers (POWAs). More specifically, it applies to single channel
OAs placed before optical receivers, where there are no optical bandpass filtering elements
placed between the OA and the receiver.
The object of this part of IEC 61290-3 is to establish uniform requirements for accurate and
reliable measurement of the ratio of the signal output power to the total ASE power generated
by the OA in the optical bandwidth of the receiver. This quantity is a measure of the
spontaneous-spontaneous beat noise at the receiver, and is correlated to the spontaneous-
spontaneous noise factor of the OA, F , as defined in IEC 61290-3 and IEC 61291-1.
sp-sp
IEC 61290-3-1 describes a measurement method, using an optical spectrum analyzer, OSA, for
the signal-spontaneous noise factor F but does not describe a method for measuring
sig−sp
F . IEC 61290-3-2 describes a measurement method, using an electrical spectrum analyzer
sp-sp
(ESA), for the total noise factor F + F . However, this method does not allow F to
sp-sp sig-sp sp-sp
be measured separately, and therefore does not provide a means of directly quantifying the
effect of spontaneous-spontaneous beat noise at the receiver. This part of IEC 61290-3
complements IEC 61290-3-1 and IEC 61290-3-2 in that it provides such a means.
Two measurement methods are provided for the ratio of the signal output power to the total
ASE power. The first method uses an OSA, while the second method uses a bandpass filter
and an optical power meter.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and
are indispensable for its application. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments)
applies.
IEC 61290-3, Optical amplifiers – Test methods – Part 3: Noise figure parameters
IEC 61291-1:2012, Optical fibre amplifiers – Part 1: Generic specification
3 Terms, definitions and abbreviations
3.1 Terms and definitions
For the purposes of this document, the following terms and definitions apply.

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SIST EN 61290-3-3:2014
– 6 – 61290-3-3 © IEC:2013
3.1.1
signal input power
P
in
power of the optical signal at the input to the OA
3.1.2
signal output power
P
out
power of the optical signal at the output of the OA
3.1.3
signal wavelength

λ
s
wavelength of the signal optical carrier
[SOURCE: IEC 61291-1:2012, definition 3.2.2.1.1]
3.1.4
signal gain
G
gain of the OA at the signal wavelength, defined as the ratio of the output signal power to the
input signal power
3.1.5
amplified spontaneous emission band
ASE band
B
ASE
wavelength band that contains at least 99 % of the total ASE power generated by OA
3.1.6
ASE centre wavelength
λ
C
centre wavelength of the ASE band
3.1.7
ASE power
P
ASE
ASE power generated by the OA within the ASE band
3.1.8
signal to total ASE power ratio
Sig_ASE
ratio of the output signal power to the total ASE power within B
ASE
3.1.9
spontaneous–spontaneous noise factor
F
sp-sp
ratio of the electrical SNR due to spontaneous-spontaneous beat noise at the OA output to the
electrical SNR due to shot noise at the OA input
Note 1 to entry: See also IEC 61290-3 for a detailed formula for of F .
sp-sp
3.2 Abbreviations
APD avalanche photo diode
AFF ASE flattening filter
ASE amplified spontaneous emission

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SIST EN 61290-3-3:2014
61290-3-3 © IEC:2013 – 7 –
CD chromatic dispersion
DFB distributed feedback
EDFA erbium-doped fibre amplifier
ESA electrical spectrum analyzer
FWHM full width half maximum
NF noise figure
OA optical amplifier
OFA optical fibre amplifier
OSA optical spectrum analyzer
PDG polarization dependent gain
PMD polarization mode dispersion
POWA  planar optical waveguide amplifier
RBW resolution band width
SNR signal to noise ratio
SOA semiconductor optical amplifier
VOA variable optical attenuator
WDM wavelength division multiplexing
4 Background
In recent years, high-speed transmission links beyond 10 Gb/s have been commercially
introduced. These links (as well as some high-end 10-Gb/s links, such as submarine links)
require high sensitivity receivers, e.g. avalanche photo diode (APD) receivers, which operate in
a limited input optical power dynamic range. In addition, specialized optical components such
as chromatic dispersion (CD) compensators and polarization mode dispersion (PMD)
compensators may be placed on the receiver module, thus introducing considerable optical
insertion loss.
In multi-channel wavelength division multiplexed (WDM) links a multi-channel OA is often
placed at the end of the link before the WDM signal is demultiplexed into individual channels.
The total output power of the multi-channel OA is typically such that the optical power per
channel is in the range of 0 dBm to 5 dBm. This power is then attenuated by the demultiplexer,
and further attenuated by the specialized optical components mentioned above. Thus, the
optical power reaching the receiver may be below the required input optical power dynamic
range. In this case, a single channel OA may be placed on the receiver module to boost the
optical power reaching the receiver.
In such a situation, there is typically no optical bandpass filter between the single channel OA
and the receiver, so that all the amplified spontaneous emission (ASE) noise generated by the
amplifier reaches the receiver. This can result in a significant level of spontaneous-
spontaneous beat noise at the receiver. One way to characterize this noise is through the
spontaneous-spontaneous noise factor, F , as defined in IEC 61290-3 and IEC 61291-1.
sp-sp
Another way to characterize the spontaneous-spontaneous beat noise is through the signal to
total ASE power ratio, Sig_ASE, at the OA output, given by the following:
P
out
Sig _ ASE= (1)
P
ASE
where P is the signal output power of the OA, and P is the ASE power generated by the
...