ECOC 1975 - ECOC 2013

CONCLUSIONS
The practical design and installation requirements of a low bit-rate
optical %ibre transmission system have been taken to a point where the
feasibility of installing a practicable field trial system in the near
future can be clearly seen. The introduction of these systems is
dependent finally on there being an economic advantage over other
equivalent systems.
155
For the 139.264 Mbit/s and higher bit-rate digital systems, further
development is needed before trial systems are installed. Work directed
at this stage towards the practical production of necessary items in a
form suitable for early use in the transmission network will be invaluable
for the rapid assessment of the viability of optical fibre
systems, and for their inclusion in future network plans.
ACKNOWLEDGEMENTS
The authors wish to thank the Director of Research of the Post Office
for permission to publish this paper, and to express their appreciation
of the advice, co-operation and assistance given by their colleagues
in the Post Office and industry in the design and construction of the
systems discussed.
REFERENCES
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Specialist Conference on the Technology
of Electroluminescent Diodes, Atlanta,
Georgia, Nov 20-21, 1974
2 Lucas A D - "Epitaxial silicon avalanche photodiode"
Opto-electronics 6 (1974) 153-160
3 Personnick S D - "Receiver Design for Digital Fibre Optic
Communication systems I"BSTJ Vol 52 No 6
July-August 1973.
4 Maurer R D - "Glass fibres for optical communication"
Froc IEEE Vol 61 No 4 April 1973 p. 452-462
5 Goell J E - "Input Amplifiers for Optical PCM Receivers"
BSTJ Vol 53 No 9 November 1974
6 Goodwin A R, - "Temperature-stable continuously operating
Peters J R, Pion M Ga Al,i ,As injection lasers". See this volume
x -x