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IEC 61977
Edition 4.0 2020-04
REDLINE VERSION
colour
inside
Fibre optic interconnecting devices and passive components – Fibre optic fixed
filters – Generic specification
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IEC 61977
Edition 4.0 2020-04
REDLINE VERSION
colour
inside
Fibre optic interconnecting devices and passive components – Fibre optic fixed
filters – Generic specification
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 33.180.20 ISBN 978-2-8322-8186-4
– 2 – IEC 61977:2020 RLV © IEC 2020
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 8
Basic terms .
3.1 Component terms. 8
3.2 Performance terms . 10
4 Requirements . 14
4.1 Classification . 14
4.1.1 General . 14
4.1.2 Technology and function Type . 15
4.1.3 Interface style . 16
Variant . 14
Normative reference extensions. 14
4.2 Documentation . 18
4.2.1 Symbols . 18
Specification system .
4.2.2 Drawings . 19
4.2.3 Tests and measurements . 19
4.2.4 Test report . 20
4.2.5 Instructions for use . 20
4.3 Standardisation system . 20
4.3.1 Interface standards . 20
4.3.2 Performance standards . 21
4.3.3 Reliability standards . 21
Interlinking .
4.4 Design and construction . 24
4.4.1 Materials . 24
4.4.2 Workmanship . 24
4.5 Quality . 24
4.6 Performance requirements . 24
4.7 Identification and marking . 24
4.7.1 General . 24
Variant identification number .
4.7.2 Component marking . 24
4.7.3 Package marking . 25
4.8 Packaging . 25
4.9 Storage conditions . 25
4.10 Safety . 25
Annex A (informative) Example of etalon filter technology . 27
A.1 Operating principle of etalon filter . 27
A.2 Transmission characteristics of etalon filter . 28
Annex B (informative) Example of fibre Bragg grating (FBG) filter technology . 29
B.1 Operating principle of FBG . 29
B.2 Example of usage of an FBG . 30
Annex C (informative) Example of thin film filter technology . 31
C.1 Example of thin film filter technology . 31
C.2 Example of application of thin film filters . 31
Annex D (informative) Examples of interface style . 33
Bibliography . 34
Figure 1 – Illustration of passband ripple . 11
Figure 2 – Illustration of a stopband . 12
Figure 3 – Illustration of maximum insertion loss within a passband . 13
Figure 4 – Illustration of minimum insertion loss within a passband . 13
Figure 5 – Illustration of X dB bandwidth . 14
Figure 6 – Optic filter style configurations .
Figure 7 – Standards currently under preparation .
Figure A.1 – Schematic diagram of an etalon . 27
Figure A.2 – Transmission characteristic of an etalon . 28
Figure B.1 – Technology of a fibre Bragg grating . 29
Figure B.2 – Application of an optical add/drop module . 30
Figure B.3 – Application of an OTDR sensor . 30
Figure B.4 – Application of the wavelength stabilizer for a 980 nm pump LD . 30
Figure C.1 – Structure of a multilayer thin-film . 31
Figure C.2 – Application for a GFF for an optical fibre amplifier . 32
Figure C.3 – Application for a BPF for an optical fibre amplifier . 32
Figure D.1 – Examples of interface style for fibre optic fixed filters . 33
Table 1 – Example of a typical fibre optic fixed filter classification . 15
Table 2 – The IEC specification structure .
Table 3 – Standards interlink matrix .
Table 4 – Quality assurance options .
– 4 – IEC 61977:2020 RLV © IEC 2020
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
FIBRE OPTIC INTERCONNECTING
DEVICES AND PASSIVE COMPONENTS –
FIBRE OPTIC FIXED FILTERS – GENERIC SPECIFICATION
FOREWORD
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