Limitation of Transmission Distance and Capacity Due to Polarisation Dispersion in a Lightwave System

M. Tsubokawa, Y. Sasaki

Research output: Contribution to journalArticle

11 Citations (Scopus)


The length dependence of group delay differences between orthogonally polarised modes has been investigated experimentally for real single-mode fibres ranging from 01 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 × 10-3 m-1. A light pulse will broaden by 17ps 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.

Original languageEnglish
Pages (from-to)350-352
Number of pages3
JournalElectronics Letters
Issue number6
Publication statusPublished - 1988 Jan 1



  • Optical communications
  • Optical dispersion
  • Optical fibres
  • Polarisation

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Cite this