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Enhancing long-haul radio over fiber systems through chromatic dispersion mitigation using cascaded IDCF and apodized fiber bragg grating

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Abstract

A scheme for the compensation of chromatic dispersion in Radio over Fiber systems with enhanced performance is proposed and demonstrated. The system implements a cascade of an Ideal Dispersion Compensation Filter and a tanh apodized, linearly chirped Fiber Bragg Grating for mitigating the degradation caused by chromatic dispersion. The analysis probes variations in transmission distance and channel spacing while investigating vital performance parameters like the Q factor and Bit Error Rate. Two-channel spacings of 100 GHz and 50 GHz, transmission distances ranging between 70 and 120 km and effective refractive index of the apodized and linearly chirped FBG extending between 1.3 and 1.5 are considered for the study. The analysis also covers the analysis of optical signal to noise ratio as the fiber length is varied. Additionally, the system performance is evaluated when the transmitted power of the continuous wave Laser in the transmitter segment is altered. The simulation results demonstrate that the system provides acceptable Q factor and BER values even at a transmission distance of 120 km. The comparative analysis with the formerly published results validates the performance enhancement achieved by the proposed system.

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RDS and JZ have directly participated in the planning, analysis and execution of this work and also in drafting the manuscript. All authors have read and approved the final form of the manuscript.

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Correspondence to R. D. Soumitra.

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Soumitra, R.D., Zacharias, J. Enhancing long-haul radio over fiber systems through chromatic dispersion mitigation using cascaded IDCF and apodized fiber bragg grating. Opt Quant Electron 56, 157 (2024). https://doi.org/10.1007/s11082-023-05773-x

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