IEC TR 61282-9:2016

Fibre optic communication system design guides - Part 9: Guidance on polarization mode dispersion measurements and theory

IEC TR 61282-9:2016(E) which is a Technical Report, describes effects and theory of polarization mode dispersion (PMD) and provides guidance on PMD measurements. This second edition cancels and replaces the first edition published in 2006. This second edition includes the following significant technical changes with respect to the previous edition:
- much of the theory has been condensed - focusing only on content that is needed to explain the test method;
- symbols have been removed, but abbreviations are retained;
- the material in the Clause 5 has been significantly reduced in an effort to avoid repeating what is already in the actual International Standards. Instead, the focus is on explaining the International Standards;
- measurement methods that are not found in International Standards have been removed;
- there are significant corrections to the modulation phase shift method, particularly in regard to the Mueller set technique;
- there are significant corrections to the polarization phase shift method;
- the proof of the GINTY interferometric method is presented. This proof also extends to the Fixed Analyser Cosine transfer technique;
- another Fixed Analyser method is suggested. This is based on the proof of the GINTY method and is called "spectral differentiation method";
- Clause 6 has been renamed "Limitations" and refocused on the limitations of the test methods. This Technical Report is not intended to be an engineering manual;
- the annexes have been removed;
- the bibliography has been much reduced in size;
- the introduction has been expanded to include some information on system impairments. Keywords: polarization mode dispersion (PMD)

General Information

• Status: Published
• Publication Date: 23-Mar-2016
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 33.180.01 - Fibre optic systems in general
• Technical Committee: SC 86C - Fibre optic systems and active devices
• Drafting Committee: WG 1 - TC 86/SC 86C/WG 1
• Current Stage: PPUB - Publication issued
• Start Date: 31-May-2016
• Completion Date: 24-Mar-2016

Relations

• Revises: IEC TR 61282-9:2006 - Fibre optic communication system design guides - Part 9: Guidance on polarization mode dispersion measurements and theory
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC TR 61282-9 ®
Edition 2.0 2016-03
TECHNICAL
REPORT
colour
inside
Fibre optic communication system design guides –
Part 9: Guidance on polarization mode dispersion measurements and theory
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IEC TR 61282-9 ®
Edition 2.0 2016-03
TECHNICAL
REPORT
colour
inside
Fibre optic communication system design guides –

Part 9: Guidance on polarization mode dispersion measurements and theory

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 33.180.01 ISBN 978-2-8322-3236-1

– 2 – IEC TR 61282-9:2016 © IEC 2016
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references. 7
3 Terms, definitions, and abbreviations . 7
3.1 Terms and definitions . 7
3.2 Abbreviations . 8
4 Theoretical framework . 8
4.1 Limitations and outline . 8
4.2 Optical field and state of polarization . 8
4.3 SOP measurements, Stokes vectors, and Poincaré sphere rotations . 11
4.4 First order polarization mode dispersion . 14
4.5 Birefringence vector, concatenations, and mode coupling . 16
4.6 The statistics of PMD and second order PMD . 17
4.7 Managing time . 20
5 Measurement methods . 20
5.1 General . 20
5.2 Stokes parameter evaluation . 22
5.2.1 Equipment setup and procedure . 22
5.2.2 Jones matrix eigenanalysis . 23
5.2.3 Poincaré sphere analysis . 24
5.2.4 One ended measurements based on SPE [3] . 26
5.3 Phase shift based measurement methods . 27
5.3.1 General . 27
5.3.2 Modulation phase shift – Full search . 28
5.3.3 Modulation phase shift method – Mueller set analysis [4] . 29
5.3.4 Polarization phase shift measurement method[5] . 31
5.4 Interferometric measurement methods . 33
5.4.1 General . 33
5.4.2 Generalized interferometric method [6] . 35
5.4.3 Traditional interferometric measurement method . 40
5.5 Fixed analyser . 41
5.5.1 General . 41
5.5.2 Extrema counting . 42
5.5.3 Fourier transform . 43
5.5.4 Cosine Fourier transform . 44
5.5.5 Spectral differentiation . 45
5.6 Wavelength scanning OTDR and SOP analysis (WSOSA) method [7] . 46
5.6.1 General . 46
5.6.2 Continuous model . 48
5.6.3 Large difference model . 49
5.6.4 Scrambling factor derivation . 50
6 Limitations . 53
6.1 General . 53
6.2 Amplified spontaneous emission and degree of polarization . 53
6.3 Polarization dependent loss (or gain) . 53

6.4 Coherence effects and multiple path interference . 54
6.5 Test lead fibres . 54
6.6 Aerial cables testing . 55
Bibliography . 56

Figure 1 – Two electric field vector polarizations of the HE mode in a SMF . 10
Figure 2 – A rotation on the Poincaré sphere . 13
Figure 3 – Strong mode coupling – Frequency evolution of the SOP . 16
Figure 4 – Random DGD variation vs. wavelength . 18
Figure 5 – Histogram of DGD values from Figure 4 . 18
Figure 6 – SPE equipment diagram . 22
Figure 7 – Relationship of orthogonal output SOPs to the PDV . 24
Figure 8 – Stokes vector rotation with frequency change . 25
Figure 9 – Setup for modulation phase shift . 27
Figure 10 – Setup for polarization phase shift . 28
Figure 11 – Output SOP relation to the PSP . 30
Figure 12 – Interferometric measurement setup . 33
Figure 13 – Interferogram relationships . 35
Figure 14 – Mean square envelopes . 38
Figure 15 – Fixed analyser setup . 41
Figure 16 – Fixed analyser ratio . 42
Figure 17 – Power spectrum . 44
Figure 18 – Fourier transform . 44
Figure 19 – WSOSA setup . 46
Figure 20 – Frequency grid . 47

Table 1 – Map of test methods and International Standards . 22
Table 2 – Mueller SOPs . 29

– 4 – IEC TR 61282-9:2016 © IEC 2016
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
FIBRE OPTIC COMMUNICATION SYSTEM DESIGN GUIDES –

Part 9: Guidance on polarization mode dispersion
measurements and theory
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