期刊名称：International Journal of Innovative Research in Computer and Communication Engineering
印刷版ISSN：2320-9798
电子版ISSN：2320-9801
出版年度：2017
卷号：5
期号：6
页码：12261
DOI：10.15680/IJIRCCE.2017.0506155
出版社：S&S Publications
摘要：In Optical fiber communication the nonlinear effects degrade the system performance. Nonlinear effectstend to manifest themselves when optical power is very high; they become important in Dense Wavelength DigitalMultiplexing (DWDM). Four-wave mixing (FWM) is one of the dominating/leading degradation effects in wavelengthdivision-multiplexing (WDM) systems with dense channel spacing and low chromatic dispersion on the fiber [1]-[6]. Ifin a WDM system the channels are equally spaced, the new waves generated by FWM will fall at channel frequenciesand, thus, will give rise to crosstalk [2]-[8]. Four-wave mixing (FWM) is a parametric process in which differentfrequencies interact and further generate new spectral component. Linear effects such as attenuation and dispersion canbe compensated, but nonlinear effects accumulate. They are the fundamental limiting mechanisms to the amount ofdata that can be transmitted in optical fiber communication. In this paperthe four wave mixing effect has beencompared for different values of ultra-low channel spacing and the performance has been evaluated in terms of outputspectrums, eye diagrams, bit error rate, eye opening and Q-factor[7]-[9]-[10]. Here, all the channels are spaced evenlybut at different values like 6.25 GHz, 10 GHz, and 20 GHz etc. The simulation results reveal that four wave mixing isminimum at high wavelength spacing’s.
