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Proceedings Paper

Progress In Long-Span, High-Capacity Optical Transmission System Research
Author(s): S. D. Walker; L. C. Blank
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Paper Abstract

Direct detection single mode optical fibre systems have evolved rapidly during recent years such that multigabit transmission has now been demonstrated over 100 km spans. At lower line rates, unrepeatered optical path lengths in excess of 250 km have been reported. This progress is largely due to technical advances such as narrow spectral line lasers, low-loss step-index and dispersion-shifted fibre together with high-sensitivity, broad-band receivers. The high speed system developments have placed increased emphasis on the associated signal processing functions such as timing extraction and regeneration, this latter function being provided with gallium arsenide logic devices. This paper will review some aspects of the high-speed and long-span transmission experiments carried out at BTRL. These include an ultra-long-span, 34 Mbit/s system and a 2.4 Gbit/s fully-regenerated high-speed optical transmission test over an installed 32 km fibre.

Paper Details

Date Published: 6 October 1986
PDF: 11 pages
Proc. SPIE 0630, Fibre Optics '86, (6 October 1986); doi: 10.1117/12.963581
Show Author Affiliations
S. D. Walker, British Telecom Research Laboratories (U.K.)
L. C. Blank, British Telecom Research Laboratories (U.K.)

Published in SPIE Proceedings Vol. 0630:
Fibre Optics '86
Lionel R. Baker, Editor(s)

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