High Quality Factor and Dispersion Compensation Based on Fiber Bragg Grating in Dense Wavelength Division Multiplexing
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igh Quality Factor and Dispersion Compensation Based on Fiber Bragg Grating in Dense Wavelength Division Multiplexing Bedir Yousifa, b, *, Ahmed Sh. Samrahb, **, and Rawan Waheedc, *** a
Electronics and Communications Department, Faculty of Engineering, Kafrelsheikh University, Kafrelsheikh Egypt b Electronics and Communications Department, Faculty of Engineering, Mansoura University, Daqahlia, Egypt c Electronics and Communications Department, Higher Institute of Engineering and Technology, New Damietta, Damietta, Egypt *e-mail: [email protected] **e-mail: [email protected] ***e-mail: [email protected] Received January 9, 2020; revised May 11, 2020; accepted May 20, 2020
Abstract—Chromatic Dispersion Compensation (CDC) using Fiber Bragg Grating (FBG) techniques in Dense Wavelength Division Multiplexing (DWDM) system is presented in this article. Pulse broadening effects on the transmitted signal can be limited by Dispersion Compensation (DC) mechanisms. To overcome this problem and improve the system performance, a suggested system for 10 Gbps using Chirped Fiber Bragg Grating (CFBG) as a dispersion compensator, Non-Return-to-Zero (NRZ) modulation format and an Erbium Doped fiber Amplifier (EDFA) on a Single Mode Fiber (SMF) is designed. The result shows that, with using CFBG grating length of 90 mm, SMF length of 30 Km, input power of 15 dBm and attenuation coefficient 0.1 dB/Km, the Quality-Factor (QF) is 39.9373 dB. However, increasing SMF length to 100 Km, the QF is 12.173 dB. Thus, Results show that this model is more efficient in terms of QF, Bit Error Rate (BER) and eye diagrams related to other published papers which can be useful in many applications in telecommunication system like Sensor Networks, Remote Radar Networks, Tele-spectroscopic process control network, and many more networks. Keywords: Dense Wavelength Division Multiplexing, Chirped Fiber Bragg Grating, Dispersion Compensation, Bit Error Rate, Quality-Factor and eye diagrams DOI: 10.3103/S1060992X20030078
1. INTRODUCTION In recent years, the request of optical fiber technology increases day after day in modern telecommunications networks because of its characteristics which include wide bandwidth, long-distance transmission capability and lightweight property compared to conventional methods, broad range of applications and low-cost credible optical communication links [1, 2]. The Quality-Factor (QF) and Bit Error Rate (BER) are one of the main significant parameters which controlling transmission distance in optical telecommunication system. It is needed to have a high QF and low BER within the optical transmission system so as to transmit signals over long spaces [3, 4]. Dense Wavelength Division Multiplexing (DWDM) is the most effective utilization technology used in optical fiber communication systems. It can increase the capacity and meet the bandwidth requirement by combining some signals which having various wavelengths on a particular fiber cable then transmit them all at the same instant [5, 6]. Figure 1 shows the basic
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