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Theoretical and numerical analyses for PDM-IM signals using Stokes vector receivers

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Abstract

Different from current coherent-detection-based long-haul transmission systems, inter- and intradatacenter transmissions require a simpler transmitter and receiver. A promising way to significantly meet the demands of datacenter transmission is polarization division multiplexing intensity modulation with direct detection (PDM-IM-DD) using a Stokes vector receiver (SVR). However, for different SVR architectures, the corresponding demultiplexing matrix is required to recover the Stokes vectors from the detected signals, which are combined with an arbitrary state of polarization (SOP), will change the effect of noise dynamically and significantly influence the system performance. In this study, PDM-IM signals using four SVRs, i.e., a 90° optical hybrid with 2 balanced photodetectors (BPDs) and 2 photodetectors (PDs), a 90° optical hybrid with 4 PDs, a Stokes analyzer and a 3 × 3 coupler with 4 PDs, are studied theoretically and numerically. Theoretical system models using the four SVRs are developed, and the noise power variations are analyzed quantitatively based on these models. Moreover, the performance of the systems is also investigated for 224 Gbit/s polarization division multiplexing pulse amplitude modulation 4 level with direct detection (PDM-PAM4-DD) transmission in a simulation. The simulation results show that the bit error rate (BER) performance of the systems is consistent with the theoretical noise power variation curves. The theoretical analysis scheme is helpful for the practical design of SVR-based systems.

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Acknowledgements

This work was supported by National Key Research and Development Program of China (Grant No. 2019YFB1803905), National Natural Science Foundation of China (Grant Nos. 61671053, 61871030), Fundamental Research Funds for the Central Universities (Grant No. FRF-TP-19-017A1), State Key Laboratory of Advanced Optical Communication Systems Networks, China, the Open Fund of IPOC (BUPT) (Grant No. IPOC2018B009), Foundation of Beijing Engineering and Technology Center for Convergence Networks and Ubiquitous Services, and Hong Kong Polytechnic University (Grant Nos. 1-ZVGB, G-SB65, 4-BCCK).

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Authors and Affiliations

  1. Beijing Engineering and Technology Research Center for Convergence Networks and Ubiquitous Services, University of Science and Technology Beijing, Beijing, 100083, China

    Jiahao Huo, Xian Zhou, Wei Huangfu, Jinhui Yuan, Huansheng Ning & Keping Long

  2. Department of Electronic and Information Engineering, The Hong Kong Polytechnic University, Hong Kong, 999077, China

    Jiahao Huo, Xian Zhou, Changyuan Yu & Chao Lu

  3. Key Laboratory of Luminescence and Optical Information, Ministry of Education, Institute of Optical Information, School of Science, Beijing Jiaotong University, Beijing, 100044, China

    Chao Shang

  4. Department of Electrical Engineering, The Hong Kong Polytechnic University, Hong Kong, 999077, China

    Alan Pak Tao Lau

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  1. Jiahao Huo
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  2. Xian Zhou
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  4. Wei Huangfu
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  7. Keping Long
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  8. Changyuan Yu
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  9. Alan Pak Tao Lau
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  10. Chao Lu
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Correspondence to Xian Zhou.

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Huo, J., Zhou, X., Shang, C. et al. Theoretical and numerical analyses for PDM-IM signals using Stokes vector receivers. Sci. China Inf. Sci. 63, 202307 (2020). https://doi.org/10.1007/s11432-019-2870-8

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  • DOI: https://doi.org/10.1007/s11432-019-2870-8

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