Dispersion Compensation and Demultiplexing Using a Cascaded CFBG Structure in a 150 km Long DWDM Optical Network

Baseerat Gul; Faroze Ahmad

doi:10.23919/cje.2022.00.416

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Baseerat Gul and Faroze Ahmad, “Dispersion Compensation and Demultiplexing Using a Cascaded CFBG Structure in a 150 km Long DWDM Optical Network,” Chinese Journal of Electronics, in press, doi: 10.23919/cje.2022.00.416, 2023.

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Baseerat Gul and Faroze Ahmad, “Dispersion Compensation and Demultiplexing Using a Cascaded CFBG Structure in a 150 km Long DWDM Optical Network,” Chinese Journal of Electronics, in press, doi: 10.23919/cje.2022.00.416, 2023.

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Dispersion Compensation and Demultiplexing Using a Cascaded CFBG Structure in a 150 km Long DWDM Optical Network

doi: 10.23919/cje.2022.00.416

1.
Department of Electronics and Communication Engineering. Islamic university of science and technology, Awantipora, J&K, 192122, India

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Author Bio:
Gul Baseerat (corresponding author) is currently pursuing the Ph.D. degree in the department of Electronics and Communication Engineering of Islamic University of Science and Technology (IUST), Awantipora, Kashmir. Her academic qualifications include a B.Tech degree in Electronics and Communication Engineering from IUST, Awantipora and an M.Tech degree in Digital Communication from RTU, Kota. She has also successfully cleared national-level competitive examinations such as UGC-NET and GATE, and has also worked as a Full-time Assistant Professor at SSM College of Engineering, Kashmir for more than 4 years. Her research interests are primarily focused on Long haul optical links, WDM systems, FSO, and related topics. (Email: baseerat.gul@islamicuniversity.edu.in)

Ahmad Faroze is an accomplished Associate Professor in the Electronics and Communication Engineering department at the Islamic University of Science and Technology (IUST), Awantipora, Jammu & Kashmir. With over 14 years of teaching experience, he has served as the I/C Head for more than 3 years. He holds an impressive educational background, including an M.Sc. degree, an M.Phil. degree, and a Ph.D. in Electronics from the University of Kashmir. Dr. Faroze has published over 20 journal articles and 12 conference papers, demonstrating his dedication to advancing research in the field of electronics and communication engineering. His current research interests include Optical Millimetre wave generation, Photovoltaic System Design, Analog and Digital Circuits, and DWDM systems. (Email: drferoz07@gmail.com)
Received Date: 2022-12-06
Accepted Date: 2023-03-21

Available Online: 2023-07-13

Abstract

Abstract

This paper proposes the design of a 150 km dense wavelength division multiplexed (DWDM) optical network with a capacity of 8×10 Gbps. To mitigate system dispersion, a cost-effective hybrid dispersion compensator is implemented using chirped fiber Bragg gratings (CFBG) and a pair of 5 km long dispersion compensation fibers (DCF). The novelty of the work is the use of CFBG for multiple functions, including operating as a demultiplexer and providing dispersion compensation. The proposed network design uses 140 km long conventional single-mode fiber (CSMF) and a 10 km long DCF in a symmetrical compensation mode. Without the CFBG structure, a 33 km long DCF would be needed to compensate for total channel dispersion, costing around 3$/m. However, by adding the CFBG structure, the design only requires a 10 km long DCF, reducing the DCF length by more than 65% and lowering the system cost. The CFBG integration also eliminates the need for an additional demultiplexer in the receiver section, reducing system complexity and cost. The system performance is evaluated analytically in terms of Q-factor, bit-error rate (BER), eye-diagram, and optical signal-to-noise ratio (OSNR). The average Q-factor and BER values achieved per channel are 16.5 and 8.38×10⁻⁵⁶, respectively, and for all receiver channels, the eye-openings are good enough with commendable OSNR values. The proposed design achieves good performance characteristics despite using shorter-length DCF when compared with previously reported works.

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References(29)

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