IEC 61300-3-29:2014 identifies two basic measurement methods for characterizing the spectral transfer functions of DWDM devices. The transfer functions are the functions of transmittance dependent of wavelengths. In this standard, optical attenuations are also used. The transfer functions can be used to produce measurements of insertion loss (IL), polarization dependent loss (PDL), isolation, centre wavelength, bandwidth (BW) and other optical performances. This second edition cancels and replaces the first edition published in 2005. It constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: – terms and definitions have been added and reconsidered in order to be harmonized with IEC 62074-1; – characterizations of the device under test have been reviewed; – details to be specified have been reconsidered. Keywords: spectral transfer functions of DWDM devices, measurements of insertion loss (IL), polarization dependent loss (PDL), isolation, centre wavelength, bandwidth (BW)<\/p>\n
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| 4<\/td>\n | Foreword Endorsement notice <\/td>\n<\/tr>\n | ||||||
| 5<\/td>\n | Annex ZA (normative) Normative references to international publications with their corresponding European publications <\/td>\n<\/tr>\n | ||||||
| 6<\/td>\n | English CONTENTS <\/td>\n<\/tr>\n | ||||||
| 9<\/td>\n | 1 Scope 2 Normative references 3 Terms, definitions, abbreviations and symbols 3.1 Terms and definitions <\/td>\n<\/tr>\n | ||||||
| 10<\/td>\n | 3.2 Symbols and abbreviations 3.2.1 Symbols 3.2.2 Abbreviations <\/td>\n<\/tr>\n | ||||||
| 11<\/td>\n | 4 General description <\/td>\n<\/tr>\n | ||||||
| 12<\/td>\n | 5 Apparatus 5.1 Measurement set-up Figures Figure 1 \u2013 Basic measurement set-up Tables Table 1 \u2013 Test methods <\/td>\n<\/tr>\n | ||||||
| 13<\/td>\n | Figure 2 \u2013 Measurement set-up for tuneable narrowband light source (TNLS) system Figure 3 \u2013 Measurement set-up for TNLS and tuneable narrowband detector (TND) system Figure 4 \u2013 Measurement set-up for BBS and tuneable narrowband detector (TND) system <\/td>\n<\/tr>\n | ||||||
| 14<\/td>\n | 5.2 Light source, S 5.2.1 Tuneable narrowband light source (TNLS) \u2013 Method A 5.2.2 Broadband source (BBS) \u2013 Method B 5.3 Tracking filter (TF) 5.4 Reference branching device (RBD) <\/td>\n<\/tr>\n | ||||||
| 15<\/td>\n | 5.5 Wavelength meter (WM) 5.6 Polarizer (PL) 5.7 Polarization controller (PC) 5.8 Device under test (DUT) 5.8.1 General <\/td>\n<\/tr>\n | ||||||
| 16<\/td>\n | 5.8.2 Device input\/output optics 5.9 Detector (D) 5.9.1 Broadband detectors, BBD1, BBD2, Method A.1 5.9.2 Tuneable narrowband detector (TND) \u2013 Method A.2 and Method B <\/td>\n<\/tr>\n | ||||||
| 17<\/td>\n | 5.10 Temporary joints (TJ) 6 Procedure 6.1 General 6.2 Preparation of DUTs 6.3 System initialization <\/td>\n<\/tr>\n | ||||||
| 18<\/td>\n | 6.4 System reference measurement 6.4.1 General 6.4.2 Measurement of the reference spectra for Method A 6.4.3 Measurement of reference spectra for Method B 6.5 Measurement of device spectra Figure 5 \u2013 System reference for transmission measurement <\/td>\n<\/tr>\n | ||||||
| 19<\/td>\n | 7 Characterization of the device under test 7.1 Determination of transfer functions 7.1.1 General 7.1.2 Accounting for the source variations 7.1.3 Calculations for the Mueller matrix method <\/td>\n<\/tr>\n | ||||||
| 20<\/td>\n | 7.2 Transmission (T(\u03bb )) spectra measurements 7.2.1 General <\/td>\n<\/tr>\n | ||||||
| 21<\/td>\n | 7.2.2 Peak power calculation Figure 6 \u2013 Normalized transfer functions <\/td>\n<\/tr>\n | ||||||
| 22<\/td>\n | 7.2.3 Normalization of the transfer function 7.3 Calculation of optical attenuation (A) 7.4 Insertion loss (IL) <\/td>\n<\/tr>\n | ||||||
| 23<\/td>\n | 7.5 Bandwidth and full spectral width 7.5.1 General 7.5.2 Centre wavelength Figure 7 \u2013 BW and full spectral width for a fibre Bragg grating <\/td>\n<\/tr>\n | ||||||
| 24<\/td>\n | 7.5.3 Centre wavelength deviation 7.5.4 X dB bandwidth 7.6 Passband ripple Figure 8 \u2013 X\u00a0dB bandwidth <\/td>\n<\/tr>\n | ||||||
| 25<\/td>\n | 7.7 Isolation (I) and crosstalk (XT) 7.7.1 General Figure 9 \u2013 Passband ripple <\/td>\n<\/tr>\n | ||||||
| 26<\/td>\n | 7.7.2 Channel isolation 7.7.3 Channel crosstalk 7.7.4 Adjacent channel isolation Figure 10 \u2013 Channel isolation and crosstalk <\/td>\n<\/tr>\n | ||||||
| 27<\/td>\n | 7.7.5 Adjacent channel crosstalk 7.7.6 Minimum adjacent channel isolation 7.7.7 Maximum adjacent channel crosstalk 7.7.8 Non-adjacent channel isolation Figure 11 \u2013 Minimum adjacent channel isolation <\/td>\n<\/tr>\n | ||||||
| 28<\/td>\n | 7.7.9 Non-adjacent channel crosstalk 7.7.10 Minimum non-adjacent channel isolation 7.7.11 Maximum non-adjacent channel crosstalk 7.7.12 Total channel isolation 7.7.13 Total channel crosstalk 7.7.14 Minimum total channel isolation 7.7.15 Maximum total channel crosstalk <\/td>\n<\/tr>\n | ||||||
| 29<\/td>\n | 7.8 Polarization dependent loss (PDL(\u03bb )) 7.9 Polarization dependent centre wavelength (PDCW) Figure 12 \u2013 Polarization dependence of the transfer function <\/td>\n<\/tr>\n | ||||||
| 30<\/td>\n | 7.10 Channel non-uniformity 7.11 Out-of-band attenuation 8 Details to be specified 8.1 Light source (S) 8.1.1 Tuneable narrowband light source (TNLS) 8.1.2 Broadband source (BBS) (unpolarized) Figure 13 \u2013 Polarization dependent centre wavelength (PDCW) <\/td>\n<\/tr>\n | ||||||
| 31<\/td>\n | 8.2 Polarization controller (PC) 8.3 Polarizer (PL) 8.4 Tracking filter (TF) 8.5 Reference branching device (RBD) 8.6 Temporary joint (TJ) 8.7 Wavelength meter (WM) 8.8 Detector (D) 8.8.1 Broadband detector (BBD) 8.8.2 Tuneable narrowband detector (TNBD) <\/td>\n<\/tr>\n | ||||||
| 32<\/td>\n | 8.9 DUT <\/td>\n<\/tr>\n | ||||||
| 33<\/td>\n | Annex A (informative) Reflection spectrum measurements A.1 General A.2 Apparatus A.2.1 General A.2.2 Reference branching device Figure A.1 \u2013 Measurement set-up for a single port device <\/td>\n<\/tr>\n | ||||||
| 34<\/td>\n | A.2.3 Optical termination A.3 Measurement procedure A.3.1 General A.3.2 Determination of source reference spectrum A.3.3 Determination of system constant Figure A.2 \u2013 Source reference set-up <\/td>\n<\/tr>\n | ||||||
| 35<\/td>\n | A.3.4 Determination of reference reflectance spectrum A.3.5 Determination of device reflectance spectrum A.3.6 Determination of optical attenuation Figure A.3 \u2013 Set-up for measurement of system constant <\/td>\n<\/tr>\n | ||||||
| 36<\/td>\n | A.4 Reflection [R(\u03bb)] spectra measurements <\/td>\n<\/tr>\n | ||||||
| 37<\/td>\n | Annex B (informative) Determination of the wavelength increment parameter <\/td>\n<\/tr>\n | ||||||
| 39<\/td>\n | Annex C (informative) Determination of a mean value using the shorth function Figure C.1 \u2013 Example response and \u2013x\u00a0dB wavelengths <\/td>\n<\/tr>\n | ||||||
| 40<\/td>\n | Figure C.2 \u2013 Example showing the \u20130,5 dB wavelengths based on the shorth (dotted vertical lines) and the mean (solid vertical lines) <\/td>\n<\/tr>\n | ||||||
| 41<\/td>\n | Bibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Fibre optic interconnecting devices and passive components. Basic test and measurement procedures – Examinations and measurements. Spectral transfer characteristics of DWDM devices<\/b><\/p>\n |