IEC 61290-4-4:2018

Optical amplifiers - Test methods - Part 4-4: Gain transient parameters - Single channel optical amplifiers with gain control

IEC 61290-4-4:2018 applies to optical amplifiers (OAs) and optically amplified elementary sub-systems. More specifically, it applies to OAs using active fibres (optical fibre amplifiers, OFAs) containing rare-earth dopants, such as erbium doped fibre amplifiers (EDFAs), presently commercially available, as indicated in IEC 61291-1. This document provides the general background for optical amplifier gain transients and their measurements and indicates those IEC standard test methods for accurate and reliable measurements of the following transient parameters:
a) optical input power increase/decrease transient gain overshoot and transient net gain overshoot;
b) optical input power increase/decrease transient gain undershoot and transient net gain undershoot;
c) optical input power increase/decrease gain offset;
d) optical input power increase/decrease transient gain response constant (settling time).
These parameters have been included to provide a complete description of the transient behaviour of gain controlled OA. The parameters defined here are applicable if the amplifier is an OFA or an alternative type of OA.
Keywords: optical amplifiers (OAs) gain transients

Amplificateurs optiques - Methodes d'essai - Partie 4-4: Paramètres de gain transitoire – Amplificateurs optiques monocanaux avec commande de gain

IEC 61290-4-4:2018 s’applique aux amplificateurs optiques (OA: optical amplifier) et aux sous-systèmes élémentaires à amplification optique. Plus précisément, elle s’applique aux amplificateurs optiques utilisant des fibres actives (amplificateurs à fibres optiques, OFA: optical fibre amplifier), contenant des dopants aux terres rares, tels que les amplificateurs à fibre dopée à l'erbium (EDFA: erbium doped fibre amplifier), actuellement disponibles sur le marché, comme l’indique l'IEC 61291-1. Le présent document fournit le contexte général pour les gains transitoires des amplificateurs optiques et leurs mesures et décrit des méthodes d'essai normalisées de l'IEC pour effectuer des mesures précises et fiables des paramètres des transitoires suivants:
a) dépassement positif du gain transitoire lors d'une augmentation ou d'une diminution de puissance optique d'entrée et dépassement positif du gain net transitoire;
b) dépassement négatif du gain transitoire lors d'une augmentation ou d'une diminution de puissance optique d'entrée et dépassement négatif du gain net transitoire;
c) décalage de gain lors d'une augmentation ou d'une diminution de puissance optique d'entrée;
d) constante de temps de réponse du gain transitoire lors d'une augmentation ou d'une diminution de puissance optique d'entrée (temps de stabilisation).
Ces paramètres ont été inclus pour fournir une description complète du comportement des transitoires d'un amplificateur optique avec commande de gain. Les paramètres définis ici sont applicables si l'amplificateur est un amplificateur à fibres optiques ou un amplificateur optique d'un type alternatif.
Mots clés: amplificateurs optiques gains transitoires

General Information

• Status: Published
• Publication Date: 28-May-2018
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 33.180.30 - Optic amplifiers
• Technical Committee: SC 86C - Fibre optic systems and active devices
• Drafting Committee: WG 3 - TC 86/SC 86C/WG 3
• Current Stage: PPUB - Publication issued
• Start Date: 15-Jun-2018
• Completion Date: 29-May-2018

Standards Content (Sample)

IEC 61290-4-4 ®
Edition 1.0 2018-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Optical amplifiers – Test methods –
Part 4-4: Gain transient parameters – Single channel optical amplifiers with gain
control
Amplificateurs optiques – Méthodes d'essai –
Partie 4-4: Paramètres de gain transitoire – Amplificateurs optiques monocanaux
avec commande de gain
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IEC 61290-4-4 ®
Edition 1.0 2018-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Optical amplifiers – Test methods –

Part 4-4: Gain transient parameters – Single channel optical amplifiers with gain

control
Amplificateurs optiques – Méthodes d'essai –

Partie 4-4: Paramètres de gain transitoire – Amplificateurs optiques monocanaux

avec commande de gain
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 33.180.30 ISBN 978-2-8322-5746-3

– 2 – IEC 61290-4-4:2018 © IEC 2018
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references . 6
3 Terms, definitions, and abbreviated terms . 6
3.1 Terms and definitions . 6
3.2 Abbreviated terms . 7
4 Apparatus . 7
4.1 General . 7
4.2 Test set-up . 10
4.3 Characteristics of test equipment . 10
5 Test sample . 11
6 Procedure . 11
6.1 Test preparation. 11
6.2 Test . 11
7 Calculations . 12
8 Test result . 12
8.1 Test setting conditions . 12
8.2 Test data . 12
Bibliography . 13

Figure 1 – Definition of rise and fall times . 8
Figure 2 – OA transient gain response for power decrease event, and power increase
event . 9
Figure 3 – Gain transient measurement test set-up . 10

Table 1 – Template for transient control measurement test conditions . 12

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
OPTICAL AMPLIFIERS – TEST METHODS –

Part 4-4: Gain transient parameters –
Single channel optical amplifiers with gain control

FOREWORD
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International Standard IEC 61290-4-4 has been prepared by subcommittee 86C: Fibre optic
systems and active devices, of IEC technical committee 86: Fibre optics.
The text of this International Standard is based on the following documents:
FDIS Report on voting
86C/1507/FDIS 86C/1525/RVD
Full information on the voting for the approval of this International Standard can be found in
the report on voting indicated in the above table.
This document has been drafted in accordance with the ISO/IEC Directives, Part 2.

– 4 – IEC 61290-4-4:2018 © IEC 2018
A list of all parts in the 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 document will remain unchanged until the
stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to
the specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
INTRODUCTION
This document is based on standard OITDA AM 01 published by the optoelectronic industry
and technology development association (OITDA).

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