Design of 4-DWDM Optical Communication System to Reduce Linear and Non-linear Impairments Using DCF and Repeater Techniques | ||
| IRAQI JOURNAL OF COMPUTERS, COMMUNICATIONS, CONTROL AND SYSTEMS ENGINEERING | ||
| Articles in Press, Accepted Manuscript, Available Online from 13 April 2023 | ||
| Document Type: Research Paper | ||
| Authors | ||
| Dina S Akram* 1; Haydar M. AL-Tamimi2 | ||
| 1University of technology-Iraq | ||
| 2University 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 Q-factor 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 | ||
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