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BS EN 60793-1-48:2017

BS EN 60793-1-48:2017

$198.66

Optical fibres – Measurement methods and test procedures. Polarization mode dispersion

Published By Publication Date Number of Pages
BSI 2017 58
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This part of IEC 60793 applies to three methods of measuring polarization mode dispersion (PMD), which are described in Clause 4. It establishes uniform requirements for measuring the PMD of single-mode optical fibre, thereby assisting in the inspection of fibres and cables for commercial purposes.

PDF Catalog

PDF Pages PDF Title
2 undefined
7 English
CONTENTS
10 FOREWORD
12 INTRODUCTION
13 1 Scope
2 Normative references
3 Terms, definitions, symbols and abbreviated terms
3.1 Terms and definitions
3.2 Symbols and abbreviated terms
15 4 General
4.1 Methods for measuring PMD
18 4.2 Reference test method
4.3 Applicability
19 5 Apparatus
5.1 General
5.2 Light source and polarizers
5.3 Input optics
5.4 Input positioner
5.5 Cladding mode stripper
20 5.6 High-order mode filter
5.7 Output positioner
5.8 Output optics
5.9 Detector
5.10 Computer
6 Sampling and specimens
6.1 General
21 6.2 Specimen length
6.3 Deployment
6.3.1 General
6.3.2 Uncabled fibre
6.3.3 Optical fibre cable
22 7 Procedure
8 Calculation or interpretation of results
9 Documentation
9.1 Information required for each measurement
9.2 Information to be available
23 10 Specification information
24 Annex A (normative) Requirements specific to method A (FA) – Fixed analyser measurement method
A.1 Apparatus
A.1.1 Block diagrams
A.1.2 Light source
Figures
Figure A.1 – Block diagrams for method A
25 A.1.3 Analyser
A.2 Procedure
A.2.1 Wavelength range and increment
A.2.2 Complete the scans
27 Figure A.2 – Typical results from method A
28 A.3 Calculations
A.3.1 Approaches of calculating PMD
A.3.2 Extrema counting
A.3.3 Fourier transform
30 A.3.4 Cosine Fourier analysis
Figure A.3 – PMD by Fourier analysis
33 Table A.1 – Cosine transform calculations
34 Figure A.4 – Cross-correlation and autocorrelation functions
35 Annex B (normative) Requirements specific to method B (SPE) – Stokes parameter evaluation method
B.1 Apparatus
B.1.1 Block diagram
B.1.2 Light source
Figure B.1 – Block diagram for method B
36 B.1.3 Polarimeter
B.2 Procedure
37 B.3 Calculations
B.3.1 Principle
Figure B.2 – Typical random mode coupling results from method B
38 B.3.2 Jones matrix eigenanalysis (JME)
Figure B.3 – Typical histogram of DGD values.
39 B.3.3 Poincaré sphere analysis (PSA)
40 B.3.4 State of polarization (SOP)
41 Annex C (normative) Requirements specific to method C (INTY) – Interferometry method
C.1 Apparatus
C.1.1 Block diagram
Figure C.1 – Schematic diagram for method C (generic implementation)
43 Figure C.2 – Other schematic diagrams for method C
44 C.1.2 Light source
C.1.3 Beam splitter
C.1.4 Analyser
C.1.5 Interferometer
C.1.6 Polarization scrambler
45 C.1.7 Polarization beam splitter
C.2 Procedure
C.2.1 Calibration
C.2.2 Routine operation
46 Figure C.3 – Fringe envelopes for negligible and random polarizationmode coupling of TINTY-based measurement system
48 Figure C.4 – Fringe envelopes for mixed, negligible and random polarizationmode coupling of GINTY-based measurement system
49 C.3 Calculations
C.3.1 General
C.3.2 TINTY calculations
50 C.3.3 GINTY calculations
52 Annex D (informative) Determination of RMS width from a fringe envelope
D.1 Overview
D.2 RMS calculation for TINTY
Figure D.1 – Parameters for interferogram analysis
54 D.3 RMS calculation for GINTY
56 Bibliography

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BS EN 60793-1-48:2017
$198.66