BS EN 60793-1-48:2017 – TC:2020 Edition
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Tracked Changes. Optical fibres – Measurement methods and test procedures. Polarization mode dispersion
| Published By | Publication Date | Number of Pages |
| BSI | 2020 | 125 |
IEC 60793-1-48: 2017 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. This third edition cancels and replaces the second edition published in 2007. It constitutes a technical revision. This edition includes the following significant technical change with respect to the previous edition: removal of the SOP approach.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 69 | undefined |
| 74 | English CONTENTS |
| 77 | FOREWORD |
| 79 | INTRODUCTION |
| 80 | 1 Scope 2 Normative references 3 Terms, definitions, symbols and abbreviated terms 3.1 Terms and definitions 3.2 Symbols and abbreviated terms |
| 82 | 4 General 4.1 Methods for measuring PMD |
| 85 | 4.2 Reference test method 4.3 Applicability |
| 86 | 5 Apparatus 5.1 General 5.2 Light source and polarizers 5.3 Input optics 5.4 Input positioner 5.5 Cladding mode stripper |
| 87 | 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 |
| 88 | 6.2 Specimen length 6.3 Deployment 6.3.1 General 6.3.2 Uncabled fibre 6.3.3 Optical fibre cable |
| 89 | 7 Procedure 8 Calculation or interpretation of results 9 Documentation 9.1 Information required for each measurement 9.2 Information to be available |
| 90 | 10 Specification information |
| 91 | 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 |
| 92 | A.1.3 Analyser A.2 Procedure A.2.1 Wavelength range and increment A.2.2 Complete the scans |
| 94 | Figure A.2 – Typical results from method A |
| 95 | A.3 Calculations A.3.1 Approaches of calculating PMD A.3.2 Extrema counting A.3.3 Fourier transform |
| 97 | A.3.4 Cosine Fourier analysis Figure A.3 – PMD by Fourier analysis |
| 100 | Table A.1 – Cosine transform calculations |
| 101 | Figure A.4 – Cross-correlation and autocorrelation functions |
| 102 | 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 |
| 103 | B.1.3 Polarimeter B.2 Procedure |
| 104 | B.3 Calculations B.3.1 Principle Figure B.2 – Typical random mode coupling results from method B |
| 105 | B.3.2 Jones matrix eigenanalysis (JME) Figure B.3 – Typical histogram of DGD values. |
| 106 | B.3.3 Poincaré sphere analysis (PSA) |
| 107 | B.3.4 State of polarization (SOP) |
| 108 | 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) |
| 110 | Figure C.2 – Other schematic diagrams for method C |
| 111 | C.1.2 Light source C.1.3 Beam splitter C.1.4 Analyser C.1.5 Interferometer C.1.6 Polarization scrambler |
| 112 | C.1.7 Polarization beam splitter C.2 Procedure C.2.1 Calibration C.2.2 Routine operation |
| 113 | Figure C.3 – Fringe envelopes for negligible and random polarizationmode coupling of TINTY-based measurement system |
| 115 | Figure C.4 – Fringe envelopes for mixed, negligible and random polarizationmode coupling of GINTY-based measurement system |
| 116 | C.3 Calculations C.3.1 General C.3.2 TINTY calculations |
| 117 | C.3.3 GINTY calculations |
| 119 | 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 |
| 121 | D.3 RMS calculation for GINTY |
| 123 | Bibliography |
