Document Type : Research Paper
Authors
1 University of technology-Iraq
2 University of Technology, Baghdad, Iraq, Department of Communication Engineering
Abstract
Linear and non-linear impairments are the major problems that
affected the dense wavelength division multiplexing (DWDM) system
performance. In this simulation designs, two different compensation techniques
have been proposed to eliminate signal impairments. The repeater technique
was proposed to reduce non-linear effects like four-wave mixing (FWM) which
cause transfer power from DWDM channels to another new channels. The
dispersion compensation fiber (DCF) technique was used to reduce dispersion
effects which cause signal pulse broadening over long transmission distances.
Also, three different modulation formats and four frequency separations were
used to determine which modulation scheme is more compatible with the
compensation techniques. The results is calculated in term of quality factor
against power and noetic that the carrier suppressed return to zero (CSRZ)
format offers the best performance with the DCF technique with 32.1804 Qfactor at 15dBm threshold power then, the differential phase shift keying
(DPSK) format is compatible with the repeater technique with 27.7959 quality
factor and 14dBm threshold power
Keywords
- Dense Wavelength Division Multiplexing (DWDM)
- Dispersion Compensation Fiber DCF
- Repeater
- and Non-linear Effects
Main Subjects