A cascaded FBG scheme based OQPSK/DPSK modulation for chromatic dispersion compensation

Springer Science and Business Media LLC - Tập 54 Số 7 - 2022
Fathy M. Mustafa1, Sayed A. Zaky2, Ashraf A. M. Khalaf2, Moustafa H. Aly3
1Electrical Engineering Department, Faculty of Engineering, Beni-Suef University, Beni-Suef, Egypt
2Electronics and Communications Engineering Department, Faculty of Engineering, Minia University, Minia, Egypt
3Electronics and Communication Engineering Department, College of Engineering and Technology, Arab Academy for Science, Technology and Maritime Transport, P.O.B. 1029, Abou Kir, Alexandria, Egypt

Tóm tắt

AbstractThe aim of this study is to present a proposed chromatic dispersion compensation model for single mode optical fiber. The proposed model consists of 4-stages of cascaded identical linear chirped fiber Bragg grating (CFBG) in post-compensation connection scheme. It is based on differential phase shift keying modulation format. To evaluate the performance of the proposed model, a comparative study is conducted using offset quadrature phase shift keying modulation technique. This comparative study includes four cases with and without using CFBG. For system performance evaluation, a 10 Gbps wavelength division multiplexing link is simulated at a distance of 70 km under conventional operating parameters. Optisystem 7.0 has been used for simulation and evaluation process. Quality factor (Q-factor) and bit error rate (BER) are used as evaluation metrics. The proposed model shows the best performance in case of using CFBG compared to the other cases. A maximum Q-factor of 7.22, and a corresponding minimum BER of 2.59 × 10−13are obtained. The proposed system performance is enhanced by at least 53% as compared to related work.

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