BSI PD IEC/TR 61282-11:2012
$167.15
Fibre optic communication system design guides – Multimode launch conditions
| Published By | Publication Date | Number of Pages |
| BSI | 2012 | 40 |
IEC/TR 61282-11:2012(E) is intended to show the background of encircled flux for the characterisation of multimode launch conditions. This includes the selection of the encircled flux and the definition of the encircled flux requirements in conjunction with the implied variation in attenuation measurements.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 4 | CONTENTS |
| 6 | FOREWORD |
| 8 | INTRODUCTION |
| 9 | 1 Scope 2 Normative references 3 Terms and definitions |
| 10 | 4 Background 5 Metrics for multimode launch conditions 5.1 General |
| 11 | 5.2 Coupled power ratio (CPR) 5.3 Mode power distribution / relative power distribution (MPD/RPD) |
| 12 | 5.4 Encircled flux (EF) 6 Uncertainties 6.1 General 6.2 Measurement model and uncertainties |
| 13 | 6.3 Uncertainty due to the setup 6.4 Uncertainty due to the power meter 6.5 Random uncertainties 6.5.1 Uncertainty due to fibre manipulation |
| 14 | 6.5.2 Uncertainties due to launch conditions |
| 15 | 6.6 Example of uncertainty accumulation Figures Figure 1 – Uncertainties due to the launch conditions for a given loss Tables Table 1 – Uncertainties accumulation |
| 16 | 7 Encircled flux envelope – theory and assumptions 7.1 Mode field eigenfunctions |
| 18 | 7.2 Connections, attenuation and the encircled flux template |
| 19 | 7.3 Target weights |
| 20 | Figure 2 – Comparison of target weights |
| 21 | Figure 3 – Incremental loss using OFL launch |
| 22 | 7.4 Coupling matrix calculations Figure 4 – Incremental loss using target launch |
| 23 | 8 Wavelength bias correction to EF targets/limits with spectrally broad sources 8.1 General 8.2 Modified spectrum assumptions |
| 24 | 8.3 Determining the EF targets Table 2 – Percent variation for best fit against target to derive adjustmentfor encircled flux for 50 µm MMF |
| 25 | 8.4 Determining the EF limits Table 3 – Encircled flux adjustment at 850 nm for 50 µm multimode fibre Table 4 – Encircled flux adjustment at 1 300 nm for 50 µm multimode fibre |
| 26 | 8.5 Validating the EF limits Table 5 – Calculated encircled flux limits for 50 µm multimodefibre at 850 nm and 1 300 nm |
| 28 | Annex A (informative) IEC international standards related to multimode launch conditions Table A.1 – Standards for multimode launch condition |
| 30 | Annex B (informative) Coupled power ratio measurement for fibre-optic sources Table B.1 – Light source characteristics |
| 31 | Table B.2 – Light source categorization by CPR value (850 nm wavelength, CPR values in decibels) Table B.3 – Light source categorization by CPR value (1 300 nm wavelength, CPR values in decibels) |
| 32 | Annex C (informative) Limits on RPD and MPD |
| 33 | Figure C.1 – Example of a characteristic MTF |
| 35 | Figure C.2 – Relative power distribution (RPD) specification Figure C.3 – Example of a characteristic MPD |
| 36 | Figure C.4 – MPD (Modal power distribution) specification |
| 37 | Bibliography |
