Question 13/XV - Characteristics for submarine optical fibre cables and
systems (Continuation of Question 19/XV 1985-88)

Considering

(1) that the characteristics of optical fibres and the progress in opto-
electronic components make it possible to realize submarine cable links
with optical fibres;

(2) that many administrations are now using such submarine cable links;

(3) that optical fibre intended for submarine cables use need to have
characteristics appropriate to the special mechanical and environmental
conditions that they are likely to encounter;

(4) that long lengths of cable are generally used in submarine
applications,

What should be recommended for the characteristics of submarine optical
fibre cables and systems?

Points for study

1.Transmission characteristics and relevant test methods for long-length
fibre and cable.

2.Mechanical characteristics of fibre and cable.

3.Reliability under various environmental conditions of:

3.1optical and transmission characteristics of fibre and cable;

3.2 mechanical properties of fibre and cable.

4.Maintenance strategy.

5.Line systems aspects.

Notes

1. The study of this Question should be coordinated with the study of
Questions 11/XV, 18/XV and 25/XV.

2. Study of Point 2 should be coordinated with Study Group VI.

3.Study of Point 4 should be coordinated with Study Group IV.

4. It would be useful to keep up to date the information on cable ships
given in the Blue Book, Volume III, Supplement 11.

5. The summary of the data collected during the 1985-88 study period on
the characteristics of submarine cables are given in the optical fibre
systems Planning Guide.