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- W4385830265 abstract "High-speed coherent optical communication systems can effectively solve the current problems of transmission capacity and transmission distance in the field of communication, and have become an important research direction in optical communication. The optical signals generated by lasers are composed of different frequency components, which have different transmission speeds in optical fibers, causing dispersion effects. Dispersion causes inter-code crosstalk, which has an impact on coherent demodulation and threshold judgments at the receiving end. Dispersion has a constraining effect on the performance of high-speed coherent optical communication systems, and the development of optical communication requires the study of equalization methods to solve the dispersion problem. In this paper, we examine the dispersion problems and the corresponding solutions in coherent optical communication by reviewing various domestic and foreign literature, focusing on the classical optical communication dispersion equalization technique and analyzing the phenomenon of limited dispersion equalization effect due to the constant modal value of the classical technique tapping coefficient. We study and design the dispersion equalizer CMGD-FIR based on the momentum gradient descent optimization algorithm, which exponentially weights the average optimized gradient and corrects the deviation at each update iteration. Simulation results show that this technique can quickly update the tap weights close to the minimum value and improve the convergence speed while ensuring the dispersion equalization effect." @default.
- W4385830265 created "2023-08-16" @default.
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- W4385830265 date "2023-08-15" @default.
- W4385830265 modified "2023-09-27" @default.
- W4385830265 title "Research on dispersion equalization technology in coherent optical communication" @default.
- W4385830265 doi "https://doi.org/10.1117/12.2686054" @default.
- W4385830265 hasPublicationYear "2023" @default.
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