Rec. ITU-T L105/L87 Amendment  1 (03/2020) Optical fibre cables for drop applicationsAmendment 1
Summary
History
FOREWORD
CONTENTS
Introduction
Amendment 1
1 Scope
2 References
3 Definitions
4 Abbreviations and acronyms
5 Conventions
6 Characteristics of the optical fibres and cables
     6.1 Optical fibres
          6.1.1 Single-mode fibres
          6.1.2 Multimode fibres
          6.1.3 Plastic fibres
     6.2 Mechanical characteristics
          6.2.1 Bending
          6.2.2 Tensile strength
          6.2.3 Bending with tension (axial strain)
          6.2.4 Crush and impact
     6.3 Environmental conditions
          6.3.1 Temperature variation
          6.3.2 Rodent attack
          6.3.3 Water immersion
     6.4 Fire safety
7 Cable construction
     7.1 Fibre protection
          7.1.1 Fibre primary coating
          7.1.2 Buffered fibre
          7.1.3 Further protection
     7.2 Cable element
          7.2.1 Tube
          7.2.2 Strength member
     7.3 Sheath
     7.4 Armour
     7.5 Water-blocking materials
     7.6 Cable identification
8 Test methods
     8.1 Test methods for cable elements
          8.1.1 Tests applicable to optical fibres
               8.1.1.1 Dimensions
               8.1.1.2 Coating strippability
               8.1.1.3 Compatibility with filling material
          8.1.2 Tests applicable to tubes
               8.1.2.1 Tube kink
     8.2 Test methods for mechanical characteristics of cable
          8.2.1 Tensile strength
          8.2.2 Bending
          8.2.3 Flexing
          8.2.4 Crushing
          8.2.5 Torsion
          8.2.6 Impact
          8.2.7 Kink
          8.2.8 Vibration
          8.2.9 Repeated bending
          8.2.10 Repeated bending at low temperature (optional)
          8.2.11 Bending with tension (optional)
     8.3 Test methods for environmental characteristics
          8.3.1 Temperature cycling
     8.4 Test methods for fire safety
          8.4.1 Flame retardant characteristics
          8.4.2 Toxic gases characteristics
          8.4.3 Smoke characteristics
Appendix I  United States' experience – Cable installation conditions in multi-dwelling units (MDUs) when using bending-loss insensitive fibre
     I.1 Mechanical reliability of optical fibre
     I.2 Comments on mechanical reliability of optical cables used in MDUs
     I.3 Reliability requirement for optical drop cables
Appendix II  Draka's experience – Reliability and handling concerns for  cables using bending loss insensitive fibres
Appendix III  Japanese experience – Test conditions for optical fibre drop cables using bending loss insensitive fibres for indoor application
     III.1 Repeated bending test
     III.2 Crush test
     III.3 Torsion test
     III.4 Impact test
     III.5 Folding test
Appendix IV  Chinese experience – Optical fibre cables for drop applications
     IV.1 Introduction
     IV.2 Scope
     IV.3 Requirements
          IV.3.1 Cable structure
               IV.3.1.1 Summary
               IV.3.1.2 Fibre
               IV.3.1.3 Fibre ribbon
               IV.3.1.4  Tight buffered fibre
               IV.3.1.5  Strength member
               IV.3.1.56  Messenger
               IV.3.1.67  Sheath
          IV.3.2 Standard manufacture length
          IV.3.3  Performance
               IV.3.3.1  Cabled fibre performance
                    IV.3.3.1.1  Single-mode fibre
                    IV.3.3.1.2  Fibre ribbon
                    IV.3.3.1.3  Attenuation attributes of cabled fibres
               IV.3.3.2 Cable sheath performance
               IV.3.3.3  Mechanical performance of the cable
                    IV.3.3.3.1  General requirements
                    IV.3.3.3.2  Separability
                    IV.3.3.3.3  Tensile strength
                    IV.3.3.3.4  Crush resistance
                    IV.3.3.3.5  Bending radius of the cable
                    IV.3.3.3.6  Sheath abrasion
                    IV.3.3.3.7  Sheath pull-out
               IV.3.3.4 Environmental characteristics
                    IV.3.3.4.1  General requirements
                    IV.3.3.4.2  Temperature ranges and attenuation attributes at these temperatures characteristics
                    IV.3.3.4.3 Flame retardancyFire safety
                    IV.3.3.4.4  Solar radiation
                    IV.3.3.4.5 Cold bend
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