Title :
Digital PPM employing temporal solitons
Author :
Cryan, R.A. ; Unwin, R.T. ; Massarella, A.J. ; Sibley, M.J.N.
Author_Institution :
Dept. of Electr. & Electron. Eng., Huddersfield Polytech., UK
Abstract :
The authors propose that advantage be taken of the fibre nonlinearity such that the digital PPM pulse becomes a temporal soliton. The maximum achievable bit rate of such a system is compared with that of PCM. Under ideal conditions (no fluctuations of the input soliton pulse width) digital PPM can be used to achieve a higher bit-rate. However, in a practical situation fluctuations of the input soliton pulse width are translated to variations in the soliton pulse position. This has a severe effect on the error probability of digital PPM, and in this situation PCM offers greater immunity
Keywords :
digital communication systems; error statistics; nonlinear optics; optical communication; optical fibres; optical modulation; pulse position modulation; solitons; PCM; digital PPM; error probability; fibre nonlinearity; fluctuations; immunity; maximum achievable bit rate; temporal soliton;
Conference_Titel :
Non-Linear Effects in Fibre Communications, IEE Colloquium on
Conference_Location :
London
