1 Scope
2 References
3 Definitions
4 Abbreviations and acronyms
5 Conventions
6 General comments on reliability
7 Optical reliability
7.1 Bending loss
7.2 Hydrogen
7.3 Impact of nuclear radiation
7.4 Attenuation stability
8 Mechanical reliability
8.1 General comments on mechanical strength of optical fibres
8.2 Power law theory
8.3 The time to failure or fibre lifetime
8.4 Static and dynamic stress corrosion parameter and impact on
reliability
8.5 Relationship between proof stress and proof testing on
reliability
8.6 Handlability of optical fibre
8.7 Tests that measure aspects of mechanical reliability
9 Strain due to bends tension, to axial tension or a combination of the
two mechanisms
10 Impact of cable properties on reliability
10.1 Fibre strain and cable strain
10.2 Installation load versus long-term load
Appendix I – Lifetime expectation in the case of small radius bending of
single-mode fibre
I.1 Introduction
I.2 General aspects of failure characteristics under small radius
bending
I.3 Network and network failure examples
I.4 Fibre lifetime considerations
I.5 Notes on calculating values in Tables I.1, I.2 and I.3
I.6 Conclusion
Appendix II – Long-term reliability of deployed optical fibre cables
II.1 Introduction
II.2 Factors having an impact on the objectives for the reliability
of deployed optical cables
II.3 Example of objectives for the reliability of laid optical
cables
Bibliography