BS EN IEC 60793-1-46:2024
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Optical fibres – Measurement methods and test procedures. Monitoring of changes in attenuation
| Published By | Publication Date | Number of Pages |
| BSI | 2024 | 18 |
IEC 60793-1-46:2024 establishes uniform requirements for the monitoring of changes in attenuation, thereby assisting in the inspection of fibres and cables for commercial purposes. This document gives two methods for monitoring the changes in attenuation of optical fibres and cables that occur during mechanical or environmental testing, or both. It provides a monitor in the change of attenuation characteristics arising from optical discontinuity, physical defects and modifications of the attenuation slope: – method A: change in attenuation by transmitted power; – method B: change in attenuation by backscattering. Methods A and B apply to the monitoring of all categories of the following fibres: – class A: multimode fibres; – class B: single-mode fibres; – class C: single-mode intraconnection fibres. Information common to both measurements is contained in Clause 1 to Clause 10, and information pertaining to each individual method appears in Annex A, and Annex B respectively.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 2 | undefined |
| 5 | Annex ZA (normative)Normative references to international publicationswith their corresponding European publications |
| 6 | English CONTENTS |
| 7 | FOREWORD |
| 9 | INTRODUCTION |
| 10 | 1 Scope 2 Normative references 3 Terms and definitions 4 Reference test method |
| 11 | 5 Apparatus 6 Sampling 6.1 Sample length 6.2 Sample end face 6.3 Sample preparation 6.4 Reference sample 7 Procedure 8 Calculations 9 Results 9.1 Information to be provided with each measurement |
| 12 | 9.2 Information available upon request 10 Specification information |
| 13 | Annex A (normative) Requirements specific to method A – Change in attenuation by transmitted power A.1 Apparatus A.1.1 General A.1.2 Optical source A.1.3 Optical divider A.1.4 Optical detector |
| 14 | A.1.5 Launch apparatus A.2 Procedure Figure A.1 – Measurement of change in attenuation using reference sample Figure A.2 – Measurement of change in attenuation using stabilized source |
| 15 | A.3 Calculations |
| 16 | Annex B (normative) Requirements specific to method B – Change in attenuation by backscattering B.1 Apparatus B.2 Procedure B.3 Calculations |
