1.   An optical fibre uses total internal reflection to carry a light beam over long distance and around corners.

2.   Despite the cost, Telecom is now irrevocably committed to optical fibres in all its new telephone speech and data trunk lines.

3.   In telecommunications, optical fibres made of glass will gradually replace the traditional copper cables in new equipment.

4.   It is interesting to examine the optical fibre before using it in the communications system.

5.   It is not the purpose here to explain exactly how an optical fibre works in terms of total internal reflection.

6.   One of the projects close to commercial realisation uses optical fibre to sense a current flowing in a conductor.

7.   Sending such digital signals lends itself well to using light along optical fibres rather than electrical signals along copper wires.

8.   The obstacle to optical fibre communication is lift loss due to impurities in the glass.

9.   This has generated some confusing comparisons between the capability of optical fibre and coaxial cables.

10.   You will also need a length of optical fibre.