IEC 61290-10-5:2014

Optical amplifiers - Test methods - Part 10-5: Multichannel parameters - Distributed Raman amplifier gain and noise figure

IEC 61290-10-5:2014 applies to distributed Raman amplifiers (DRAs). DRAs are based on the process whereby Raman pump power is introduced into the transmission fibre, leading to signal amplification within the transmission fibre through stimulated Raman scattering. A detailed overview of the technology and applications of DRAs can be found in IEC TR 61292-6. The object of this standard is to establish uniform requirements for accurate and reliable measurements, using an optical spectrum analyser (OSA), of the following DRA parameters:
- channel on-off gain;
- pump unit insertion loss;
- channel net gain;
- channel signal-spontaneous noise figure. Keywords: Raman amplifiers (DRAs), optical spectrum analyser (OSA)

Amplificateurs optiques - Méthodes d'essai - Partie 10-5: Paramètres à canaux multiples - Gain et facteur de bruit des amplificateurs Raman répartis

L'IEC 61290-10-5:2014 s'applique aux amplificateurs Raman répartis (DRA). Les DRA sont fondés sur un processus tel qu'une puissance de pompage Raman est introduite dans la fibre de transmission, conduisant à une amplification du signal au sein de la fibre de transmission par dispersion Raman stimulée. On peut trouver une vue d'ensemble détaillée de la technique et des applications des DRA dans l'IEC TR 61292-6. L'objet de la présente norme est d'établir des exigences uniformes afin d'obtenir des mesures précises et fiables des paramètres de DRA suivants, au moyen d'un analyseur de spectre optique (ASO):
- gain du canal en on-off;
- affaiblissement d'insertion de l'unité de pompage;
- gain du canal net;
- facteur de bruit signal/émission spontanée du canal. Mots clés: amplificateurs Raman (DRA), analyseur de spectre optique (ASO)

General Information

• Status: Published
• Publication Date: 22-May-2014
• 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-Aug-2014
• Completion Date: 23-May-2014

Standards Content (Sample)

IEC 61290-10-5 ®
Edition 1.0 2014-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Optical amplifiers – Test methods –
Part 10-5: Multichannel parameters – Distributed Raman amplifier gain and noise
figure
Amplificateurs optiques – Méthodes d'essai –
Partie 10-5: Paramètres à canaux multiples – Gain et facteur de bruit des
amplificateurs Raman répartis
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IEC 61290-10-5 ®
Edition 1.0 2014-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Optical amplifiers – Test methods –

Part 10-5: Multichannel parameters – Distributed Raman amplifier gain and

noise figure
Amplificateurs optiques – Méthodes d'essai –

Partie 10-5: Paramètres à canaux multiples – Gain et facteur de bruit des

amplificateurs Raman répartis
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX S
ICS 33.180.30 ISBN 978-2-8322-1581-4

– 2 – IEC 61290-10-5:2014 © IEC 2014
CONTENTS
FOREWORD . 3
1 Scope and object . 5
2 Normative references . 5
3 Terms, definitions and abbreviations . 6
3.1 Terms and definitions . 6
3.2 Abbreviated terms . 7
4 DRA gain and noise figure parameters – Overview . 7
5 Apparatus . 9
5.1 General . 9
5.2 Multi-channel signal source . 10
5.3 Polarization controller . 11
5.4 Optical spectrum analyser . 11
5.5 Optical power meter . 12
5.6 Tuneable narrowband source . 12
5.7 Broadband optical source . 12
5.8 Optical connectors and jumpers . 12
6 Test sample . 12
7 Procedure . 12
7.1 Overview. 12
7.1.1 Channel on-off gain . 12
7.1.2 Pump module channel insertion loss and channel net gain . 13
7.1.3 Channel equivalent noise figure (NF) . 13
7.2 Calibration . 13
7.2.1 Calibration of optical bandwidth . 13
7.2.2 Calibration of OSA power correction factor . 15
7.3 Measurement . 15
7.4 Calculation . 17
7.4.1 Channel on-off gain . 17
7.4.2 Channel net gain . 17
7.4.3 Channel equivalent NF. 17
8 Test results . 17
Annex A (informative) Field measurements versus laboratory measurements . 19
Annex B (informative) Pump depletion and channel-to-channel Raman scattering . 20
Bibliography . 21

Figure 1 – Distributed Raman amplification in co-propagating (left) and count-
propagating (right) configurations . 9
Figure 2 – Measurement set-up without a pump module. 10
Figure 3 – Measurement set-up for counter-propagating configuration . 10
Figure 4 – Measurement set-up for co-propagating configuration . 10
Figure 5 – Possible implementation of a multi-channel signal source . 11

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
OPTICAL AMPLIFIERS –
TEST METHODS –
Part 10-5: Multichannel parameters –
Distributed Raman amplifier gain and noise figure

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