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14 February 2019 Comparison of chromatic dispersion pre- and post-compensation with Kramers-Kronig receiver
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Proceedings Volume 11048, 17th International Conference on Optical Communications and Networks (ICOCN2018); 1104828 (2019) https://doi.org/10.1117/12.2522918
Event: 17th International Conference on Optical Communications and Networks (ICOCN2018), 2018, Zhuhai, China
Abstract
Chromatic dispersion (CD) is one of the main limitations for high speed intensity modulation and direct-detection transmission system. Electrical dispersion compensation is a cheaper and easier way to compensate CD. In this paper, we compare the performance of chromatic dispersion pre- and post-compensation for optical single side-band (SSB) 4-level pulse amplitude modulation (PAM4) signal with Kramers-Kronig (KK) receiver by simulation and experiment. We put the pre-compensation after Hilbert transform at the transmitter side and the CD post-compensation after KK receiver at the receiver side. The results show that CD tolerance of the dual-drivel Mach-Zehnder modulator (DDMZM) based SSB signal is related to the optical modulation index (OMI) of the modulator in CD pre- and post-compensation scenarios. When the optical signal-to-noise ratio (OSNR) is relatively large, CD post-compensation is more sensitive to OMI than precompensation with KK receiver. We also explore the impact of signal peak-to-average power ratio (PAPR) on the precompensation system by simulation.
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Wenjing Yu, Mingyue Zhu, Jing Zhang, Hao Ying, Shaohua Hu, and Kun Qiu "Comparison of chromatic dispersion pre- and post-compensation with Kramers-Kronig receiver", Proc. SPIE 11048, 17th International Conference on Optical Communications and Networks (ICOCN2018), 1104828 (14 February 2019); https://doi.org/10.1117/12.2522918
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