Limitation of transmission distance and capacity due to polarisation dispersion in a lightwave system

17 March 1988

journal article
Published by Institution of Engineering and Technology (IET) in Electronics Letters

Vol. 24 (6) , 350-352
https://doi.org/10.1049/el:19880238

Abstract

The length dependence of group delay differences between orthogonally polarised modes has been investigated experimentally for real single-mode fibres ranging from 0.1 km to 100 km. The mean group delay difference is a constant value of 0.67 ps, over a length of more than 1 km. The mode coupling coefficient of random mode mixing which causes pulse broadening has been estimated to be 6.3 × 10⁻³m⁻¹. A light pulse will broaden by 17 ps after traversing a 100 km-long fibre. This may restrict single-mode fibre systems to a bit rate of 10 GHz for lengths over 150 km.

Keywords

CAPACITY LIMITATION
RANDOM MODE MIXING
MODE COUPLING COEFFICIENT
10 GBIT/S
GROUP DELAY DIFFERENCES
LENGTH DEPENDENCE
TRANSMISSION DISTANCE LIMITATION
POLARISATION DISPERSION
OPTICAL FIBRE LINKS
LIGHTWAVE SYSTEM
PULSE BROADENING
SINGLE-MODE FIBRES
0.1 TO 150 KM
ORTHOGONALLY POLARISED MODES

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