IEC IEC 61300-3-7 Edition 3.0 2021-07 INTERNATIONAL STANDARD NORME INTERNATIONALE Fibre optic interconnecting devices and passive components - Basic test and measurement procedures - Part 3-7: Examinations and measurements - Wavelength dependence of attenuation and return loss of single mode components Dispositifs d'interconnexion et composants passifs fibroniques - Procédures fondamentales d'essais et de mesures : Partie 3-7: Examens et mesures - Affaiblissement et affaiblissement de reflexion des composants unimodaux en fonction de la longueur d'onde IEC 61300-3-7:2021-07(en-fr) IEC IEC61300-3-7 Edition 3.0 2021-07 INTERNATIONAL STANDARD NORME INTERNATIONALE Fibre optic interconnecting devices and passive components - Basic test and measurement procedures - Part 3-7: Examinations and measurements - Wavelength dependence of attenuation and return loss of single mode components Dispositifs dinterconnexion et composants passifs fibroniques - Procédures fondamentales d'essais et de mesures - Partie 3-7: Examens et mesures - Affaiblissement et affaiblissement de reflexion des composants unimodaux en fonction de la longueur d'onde INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE ICS 33.180.20 ISBN 978-2-8322-1052-1 Warning! Make sure that you obtained this publication from an authorized distributor. Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agree. ? Registered trademark of the Interr onalElectrotechnical Commission Marque deposéede la Commission Electrotechnique Internationale IEC 61300-3-7:2021 @IEC 2021 CONTENTS FOREWORD 1 Scope 2 Normative references 3 Terms, definitions, abbreviated terms and quantity symbols 3.1 Terms and definitions 3.2 Abbreviated terms. 3.3 Quantity symbols . 4 General description . 9 4.1 General.. 4.2 Light source and detector conditions. 4.3 General explanation of attenuation and return loss . 10 4.3.1 Attenuation... 10 4.3.2 Return loss 10 4.4 Device under test (DUT) 11 4.5 Measurement methods. 12 5 Apparatus. 5.1 General. 12 5.2 5.2.1 Method A - Broadband light source (BBS).. 5.2.2 Method B - Tuneable narrowband light source (TNLS) 5.2.3 Method C -- Set of multiple fixed narrowband light sources (NLS) ..... 5.3 Depolarizer.... .13 5.4 Power detection systems .... .14 5.4.1 Method A - Tuneable narrowband detection (TND) .14 5.4.2 Method B and C - Broadband detection (BBD) 5.5 Branching device (BD) 15 5.6 Termination.. 15 5.7 Temporary joint (TJ) 15 5.8 Test patch cord. 15 5.9 Reference plugs (RP).. 5.10 Reference adapters (RA) 16 6 Procedure.... 6.1 Method A - Broadband light source 16 6.1.1 Method A1 - Attenuation only 16 6.1.2 Method A2 - Attenuation and return loss 6.2 Method B - Tuneable narrowband light source 20 6.2.1 General . 6.2.2 Method B - Attenuation only 21 6.2.3 Method B - Attenuation and return loss 21 6.3 Method C - Set of multiple fixed narrowband light sources 22 6.3.1 General 22 6.3.2 Method C1 - Attenuation only... 6.3.3 Method c2 - Attenuation and return loss .. Test results