期刊
OPTICS EXPRESS
卷 29, 期 19, 页码 30473-30482出版社
Optica Publishing Group
DOI: 10.1364/OE.433972
关键词
-
类别
资金
- National Key Research and Development Program of China [2018YFB1801701]
- National Natural Science Foundation of China [62022029, U1701661]
- Program for Guangdong Introducing Innovative and Enterpreneurial Teams [2019ZT08X340]
- Research and Development Plan in Key Areas of Guangdong Province [2018B010114002]
- State Key Laboratory of Advanced Optical Communication Systems and Networks, China [2019GZKF1]
Proposed and experimentally demonstrated symmetrical and asymmetrical full-duplex bi-directional architectures over a 3 km few mode fiber, achieving successful high-speed bidirectional transmission and enhancing system immunity to impairments.
We propose and experimentally demonstrate symmetrical (homo-modal) and asymmetrical (hetero-modal) full-duplex bi-directional architectures based on dual-vector eigenmodes multiplexing over a 3 km few mode fiber (FMF). Firstly, 4 vector modes (VMs) of 2 mode groups (MGs), l = 0 (HE11o and HE11e modes) and l = +2 (EH11o and EH11e modes), each carrying a 14 GBaud quadrature phase-shift keying (QPSK) signal, are utilized in the up and down links and a 224 Gb/s same-mode bi-directional transmission is successfully realized. The crosstalk between the VMs in l = 0 and l = +2 of this full-duplex system is less than -13.8 dB. To strengthen the immunity to performance degradation induced by connector reflection and back scattering, we propose an effective approach to mitigate impairments by using hetero-modes on two terminals of the bi-directional system. Then, 2 VMs of l = 0 and 2 VMs of l = +2 are respectively employed in the up and down streams. The channel isolation between the VMs in l = 0 and l = +2 of such full-duplex link is larger than 19 dB, which supports a 448 Gb/s bi-directional transmission with 28 GBaud 16-ary quadrature amplitude modulation (QAM) modulation over a 3 km FMF by using 2 x 2 MIMO. Moreover, mode-wavelength division multiplexing including 2 modes and 4 wavelengths in both up and down streams is implemented in the transmission system. A total capacity of the 1.792 Tb/s link with 28 GBaud 16-QAM signal over each channel is successfully realized over the 3 km FMF. The measured bit-error-ratios (BERs) of all channels are below the 7% hard decision forward error correction (FEC) threshold at 3.8 x 10(-3). The experimental results adequately indicate that such a scheme has a great potential in high-speed bi-directional point-to-point (P2P) optical interconnects. (C) 2021 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据