BS EN 61280-4-4:2017
$215.11
Fibre optic communication subsystem test procedures – Cable plants and links. Polarization mode dispersion measurement for installed links
| Published By | Publication Date | Number of Pages |
| BSI | 2017 | 90 |
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 2 | National foreword |
| 7 | CONTENTS |
| 12 | FOREWORD |
| 14 | INTRODUCTION |
| 15 | 1 Scope 2 Normative references 3 Terms, definitions, symbols and abbreviated terms 3.1 Terms and definitions |
| 16 | 3.2 Symbols and abbreviated terms |
| 17 | 4 Background on PMD properties |
| 18 | 5 Measurement methods 5.1 Methods of measuring PMD 5.1.1 General |
| 19 | 5.1.2 Method A: Fixed analyzer with Fourier transformation (FA-FT) 5.1.3 Method B: Stokes parameters evaluation (SPE) |
| 20 | 5.1.4 Method C: Interferometric 5.1.5 Method D: Stokes parameter evaluation using back-reflected light 5.1.6 Method E: Modulated phase-shift technique 5.1.7 Method F: Polarization phase shift (PPS) |
| 21 | 5.1.8 Method G: Wavelength scanning OTDR and SOP Analysis (WSOSA) 5.2 Document structure 5.3 Reference test method 6 Measurement configurations 6.1 Passive cabling link Figures Figure 1 – Typical passive cabling link configuration |
| 22 | 6.2 Link including amplifiers 6.3 Link including chromatic dispersion compensating modules 6.3.1 General 6.3.2 Grating based DCM 6.4 Link including ROADMs 6.4.1 General Figure 2 – Example configuration of link including amplifiers |
| 23 | 6.4.2 Multi-channel point to point configuration 6.4.3 Single channel configuration 7 Measurement considerations 7.1 General 7.2 Wavelength range 7.3 PMD measurement range |
| 24 | 7.4 Measurement dynamic range 7.5 Fibre movement 7.6 Input and output SOP scrambling 7.6.1 General 7.6.2 Polarizers/scramblers |
| 25 | 7.6.3 The 9-states Mueller set 7.6.4 Random scrambling 7.7 Polarization dependent loss 7.8 Amplifier considerations 7.8.1 General 7.8.2 Optical isolators 7.8.3 Wavelength range 7.8.4 Power levels |
| 26 | 7.8.5 Amplified spontaneous emission (ASE) noise 7.9 Considerations on location of equipment 8 Apparatus 8.1 General 8.2 Light source and polarizers |
| 27 | 8.3 Input optics 8.4 Cladding mode stripper 8.5 High-order mode filter 8.6 Output connection |
| 28 | 8.7 Output optics 8.8 Detector 8.9 Computer or test platform 8.10 Means to reduce the effects of amplified spontaneous emission 9 Sampling and specimens 10 Procedure |
| 29 | 11 Calculation or interpretation of results 12 Documentation 12.1 Information required for each measurement 12.2 Information to be available |
| 30 | 13 Specification information |
| 31 | Annex A (normative) Fixed analyzer method A.1 Apparatus A.1.1 Block diagrams |
| 33 | A.1.2 Light source Figure A.1 – Block diagrams for fixed analyzer |
| 34 | A.1.3 Analyzer A.1.4 Optional polarization control at the input and output of the link under test A.2 Procedure A.2.1 Wavelength range and increment |
| 35 | A.2.2 Complete the scans |
| 36 | A.3 Calculations – Fourier transform A.3.1 General Figure A.2 – Example of the R-function for the fixed analyzer method |
| 37 | A.3.2 Data pre-processing and Fourier transformation A.3.3 Transform data fitting |
| 38 | Figure A.3 – A chirped sine wave |
| 39 | A.3.4 Spectral range Figure A.4 – PMD by Fourier analysis |
| 41 | Annex B (normative) Stokes parameter evaluation method B.1 Apparatus B.1.1 Block diagrams Figure B.1 – Block diagram for Method B using a narrowband (tuneable laser) source Figure B.2 – Block diagram for Method B using a broadband (ASE) source |
| 42 | B.1.2 Light source B.1.3 Polarimeter B.2 Procedure |
| 43 | B.3 Calculations B.3.1 General B.3.2 Jones matrix eigenanalysis (JME) |
| 45 | B.3.3 Poincaré sphere analysis (PSA) DGD calculation |
| 46 | Annex C (normative) Interferometric method C.1 General Figure C.1 – Generic set-up for Method C (INTY) |
| 47 | C.2 Traditional analysis (TINTY) C.2.1 Apparatus Figure C.2 – Schematic diagram for Method C (TINTY) |
| 48 | C.2.2 Procedure |
| 49 | C.2.3 Calculations Figure C.3 – Typical data obtained by Method C (TINTY) |
| 50 | C.3 General analysis (GINTY) C.3.1 Benefit C.3.2 Apparatus Figure C.4 – Schematic diagram for Method C (GINTY) |
| 51 | C.3.3 Procedure |
| 52 | C.3.4 Calculations Figure C.5 – Typical random-mode-coupling data obtained by Method C (GINTY) Figure C.6 – Typical mixed-mode-coupling data obtained by Method C (GINTY) |
| 54 | Annex D (informative) Stokes parameter evaluation method using back-reflected light D.1 Utility D.2 Apparatus D.2.1 Block diagram D.2.2 Directional coupler D.2.3 Angled connector D.2.4 Far-end termination Figure D.1 – Layout for Method D |
| 55 | D.3 Procedure D.4 Calculation and interpretation of results |
| 56 | Annex E (informative) Modulation phase-shift method E.1 Apparatus E.1.1 Overview and block diagrams Figure E.1 – Basic apparatus |
| 57 | E.1.2 Light source(s) Figure E.2 – Apparatus layout for polarization modulation |
| 58 | E.1.3 Modulation |
| 59 | E.1.4 Polarization control E.1.5 Input and output optics |
| 60 | E.1.6 Optical detector and phase detection electronics E.1.7 Reference signal E.2 Procedure E.2.1 Modulation frequency E.2.2 Scan the wavelengths and measure DGD |
| 62 | Figure E.3 – Mueller states on Poincaré sphere Table E.1 – Example of Mueller set |
| 63 | E.2.3 Calibration E.3 Calculations E.3.1 DGD calculations Figure E.4 – DGD versus wavelength Figure E.5 – DGD in histogram format |
| 64 | E.3.2 PMD calculation |
| 65 | Annex F (informative) Polarization phase shift method F.1 Apparatus F.1.1 Block diagram F.1.2 Light source F.1.3 Modulation Figure F.1 – Block diagram for Method F (polarization phase shift method) |
| 66 | F.1.4 Polarization control F.1.5 Output optics F.1.6 Optical detectors F.1.7 Amplitude and phase comparator |
| 67 | F.1.8 Reference signal F.2 Procedure F.2.1 Modulation frequency F.2.2 Wavelength increment F.2.3 Scanning wavelengths and measuring DGDs |
| 68 | F.2.4 Calibration F.3 Calculations F.3.1 Results overview |
| 69 | F.3.2 DGD determination Figure F.2 – DGD versus wavelength for a random mode coupling device |
| 70 | F.3.3 PMD calculation |
| 71 | Annex G (normative) Wavelength scanning OTDR and SOP analysis (WSOSA) PMD test method G.1 General G.2 Apparatus G.2.1 Block diagram Figure G.1 – Illustration of the frequency domain and parameters for WSOSA |
| 72 | G.2.2 Light source G.2.3 Launch polarization Figure G.2 − Typical generic experimental implementation for WSOSA |
| 73 | G.2.4 Polarization scrambling G.2.5 Input/output optics G.3 Specimen stability G.4 Procedure G.4.1 Set instrument parameters |
| 74 | G.4.2 Action of the instrument after measurement initiation |
| 76 | G.5 Calculations G.5.1 Power normalisation Figure G.3 – Typical power measurement results |
| 77 | G.5.2 Transmission differences Figure G.4 − Typical s(ω) for random I/O-SOP |
| 78 | G.5.3 Mean-square transmission difference and round trip PMD Figure G.5 − Typical transmission difference for a frequency pair and I/O-SOP |
| 79 | G.5.4 Determination of PMD G.6 Procedures for measuring PMD on installed aerial links G.6.1 Instability compensation |
| 80 | G.6.2 Approaches to reducing the effects of instabilities |
| 81 | Figure G.6 − Example of 2-pulse implementation in presence of instabilities |
| 82 | Annex H (informative) PMD determination by Method C H.1 General H.2 Traditional analysis |
| 84 | H.3 General analysis |
| 86 | Bibliography |
Related products
-
IEC 61280-4-4:2017
Fibre optic communication subsystem test procedures – Part 4-4: Cable plants and links – Polarization…
-
UNE-EN 61280-4-4:2017
Fibre optic communication subsystem test procedures – Part 4-4: Cable plants and links – Polarization…
