432-Gbps DP-QPSK transmission over multi-core fiber with low complexity self-coherent receiver

Muxin Shi; Linsheng Zhong; Sunningchang Zhang; Shenmao Zhang; Zhen Luo; Xiaoxiao Dai; Qi Yang; Deming Liu

doi:10.1117/12.3025176

18 March 2024 432-Gbps DP-QPSK transmission over multi-core fiber with low complexity self-coherent receiver

Muxin Shi, Linsheng Zhong, Sunningchang Zhang, Shenmao Zhang, Zhen Luo, Xiaoxiao Dai, Qi Yang, Deming Liu

Proceedings Volume 13104, Advanced Fiber Laser Conference (AFL2023); 131047A (2024) https://doi.org/10.1117/12.3025176
Event: Advanced Fiber Laser Conference (AFL2023), 2023, Shenzhen, China

Abstract

In this paper, we propose a novel approach with extremely low complexity for digital signal processing (DSP) at the receiver end. The frequency offset compensation (FOC) and carrier phase recovery (CPR) are omitted due to the self-coherent system. Multiple-input multiple-output free (MIMO-free) operation is achieved by adaptive polarization controller (APC). Therefore, a self-coherent transmission system has been successfully demonstrated experimentally over an 81 km distance, of which the first kilometer uses 7-core fiber and the remaining 80km uses standard single mode fiber (SSMF), using an 18-GBaud dual-polarization quadrature phase shift keying (DP-QPSK) signal. The center of the 7-core fiber transmitted the local oscillator (LO), while its side core transmitted the QPSK signal. This allows rapid polarization tracking of remotely delivered LO and separately delivered signal. Simultaneously, space division multiplexing (SDM) technology was employed to transmit signals in multiple channels to achieve the purpose of capacity expansion. In the experiment, a simplified self-coherent QPSK transmission system with a capacity of 432Gbps (6 × 72 Gbps) was realized.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Muxin Shi, Linsheng Zhong, Sunningchang Zhang, Shenmao Zhang, Zhen Luo, Xiaoxiao Dai, Qi Yang, and Deming Liu "432-Gbps DP-QPSK transmission over multi-core fiber with low complexity self-coherent receiver", Proc. SPIE 13104, Advanced Fiber Laser Conference (AFL2023), 131047A (18 March 2024); https://doi.org/10.1117/12.3025176

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