IEC 61300-3-7:2009

IEC 61300-3-7
Edition 2.0 2009-01
INTERNATIONAL
STANDARD
Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures –
Part 3-7: Examinations and measurements – Wavelength dependence of
attenuation and return loss of single mode components

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IEC 61300-3-7
Edition 2.0 2009-01
INTERNATIONAL
STANDARD
Fibre optic interconnecting devices and passive components – Basic test and
measurement procedures –
Part 3-7: Examinations and measurements – Wavelength dependence of
attenuation and return loss of single mode components

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
U
ICS 33.180.20 ISBN 978-2-88910-498-7
– 2 – 61300-3-7 © IEC:2009(E)
CONTENTS
FOREWORD.4
1 Scope.6
2 Normative references .6
3 Abbreviations and acronyms.6
4 General .8
4.1 General description .8
4.2 Spectral conditions.9
4.3 Definition.9
4.3.1 Attenuation .9
4.3.2 Return loss .10
4.4 Device under test .10
4.5 Measurement methods .11
4.5.1 Method A – Broadband light source (BBS).11
4.5.2 Method B – Tuneable narrowband light source (TLS).12
4.5.3 Method C – Set of multiple fixed narrowband light sources (NLS) .12
4.5.4 Method D – Tuneable OTDR.13
4.5.5 Reference method .13
5 Apparatus.13
5.1 Wavelength source.13
5.1.1 Method A – Broadband light source .13
5.1.2 Method B – Tuneable narrowband light source .13
5.1.3 Method C – Set of N narrowband light sources .14
5.1.4 Method D – Tuneable OTDR.14
5.1.5 Depolarizer.14
5.2 Detection system.15
5.2.1 Method A, Method B.2 and Method C.2 tuneable narrowband
detection spectrum .15
5.2.2 Method B.1 and Method C.1 broadband detection spectrum .15
5.3 Branching devices .15
5.4 Termination .16
6 Procedure .16
6.1 Method A – broadband light source .16
6.1.1 Attenuation-only .16
6.1.2 Return-loss-only .17
6.1.3 Attenuation and return loss.18
6.2 Method B – Tuneable narrowband light source .19
6.3 Method C – Set of multiple fixed narrowband light sources .20
6.3.1 Attenuation-only .20
6.3.2 Return-loss-only .22
6.3.3 Attenuation and return loss.23
6.4 Test results .25
7 Details to be specified .25
7.1 Source .25
7.1.1 Broadband source .25
7.1.2 Tuneable or discrete narrowband light source.26
7.1.3 Depolarizer.26

61300-3-7 © IEC:2009(E) – 3 –
7.2 Detection system.26
7.2.1 Optical power meter .26
7.2.2 Optical spectrum analyser .26
7.3 Reference branching device .26
7.4 Termination .26
Annex A (informative) Device under test configurations, terminations and product
types .27
Annex B (informative) Typical light source characteristics.29

Figure 1 – Wavelength dependence of attenuation and return loss .10
Figure 2 – Method A – Attenuation-only measurement .17
Figure 3 – Method A – Return-loss-only measurement .18
Figure 4 – Method A – Attenuation and return loss measurement.19
Figure 5 – Method C – Attenuation-only measurement .21
Figure 6 – Method C Return-loss-only measurement.22
Figure 7 – Method C – Attenuation and return loss measurement .24
Figure 8 – Wavelength dependent attenuation .25

Table 1 – Test methods and characteristics .11
Table 2 – Wavelength dependent attenuation and return loss .25
Table A.1 – Device under test configurations/terminations .27
Table A.2 – Possible types of passive optical components (POC) .27
Table B.1 – Types of broadband light source (BBS) and main characteristics .29
Table B.2 – Types of tuneable light source (TLS) and main characteristics .30

– 4 – 61300-3-7 © IEC:2009(E)
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
FIBRE OPTIC INTERCONNECTING DEVICES
AND PASSIVE COMPONENTS –
BASIC TEST AND MEASUREMENT PROCEDURES –

Part 3-7: Examinations and measurements –
Wavelength dependence of attenuation
and return loss of single mode components

FOREWORD
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International Standard IEC 61300-3-7 has been prepared by subcommittee 86B: Fibre optic
interconnecting devices and passive components, of IEC technical committee 86: Fibre optics.
This second edition cancels and replaces the first edition published in 2000. It constitutes a
technical revision.
Changes from the previous edition of this standard are to reflect changes made to IEC 61300-
1 and covers unidirectional and bi-directional methods of measurement.

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