Title :
Intra-Channel Four-Wave Mixing Impairments in Dispersion-Managed Coherent Fiber-Optic Systems Based on Binary Phase-Shift Keying
Author :
Yang, Dong ; Kumar, Shiva
Author_Institution :
Dept. of Electr. & Comput. Eng., McMaster Univ., Hamilton, ON, Canada
fDate :
7/15/2009 12:00:00 AM
Abstract :
In this paper, we mathematically derive the probability density function (PDF) of the received electrical signal for coherent fiber-optic transmission systems. Both amplified spontaneous emission (ASE) noise and fiber nonlinearity are taken into account. The results show that the PDF of a bit ldquo0rdquo or ldquo1rdquo is asymmetric when intra-channel four-wave mixing (IFWM) is dominant. However, the PDF becomes nearly symmetric when the variance of ASE is much larger than that due to IFWM. The standard deviation of the received signal is calculated analytically. It is shown that the variance varies quadratically with launch power. We also investigate the optimum system scheme, including optimum dispersion map and pre-compensation ratio, for the coherent fiber-optic systems based on analytically calculated variance of IFWM.
Keywords :
light coherence; multiwave mixing; optical fibre communication; phase shift keying; spontaneous emission; amplified spontaneous emission noise; binary phase shift keying; coherent fiber optic systems; fiber nonlinearity; fiber optic transmission; four wave mixing; optimum dispersion map; optimum system scheme; pre-compensation ratio; probability density function; Fiber-optic communication systems; intra-channel four-wave mixing (IFWM); probability density function (PDF);
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2009.2019610
