Zhang Jiao, Zhou Tianchi, Liu Xiang, Xin Zhigang, Li Wenbo, Zeng Hongxin, Huang Yongming, You Xiaohu, Zhang Yaxin, Zhu Min
Opt Lett. 2024 Dec 1;49(23):6597-6600. doi: 10.1364/OL.533746.
We experimentally demonstrate a dual-polarized, single-input single-output (SISO) photonic-electronic integrated system, achieving a single-wavelength data rate of 400 Gbit/s at 220 GHz. This system is based on a self-developed IQ mixer, orthomode transducers (OMTs), and a dual-polarized multiplexing antenna (DPMA). The IQ mixer front-end exhibits a conversion loss of over 14 dB within a 30 GHz bandwidth, and cross talk between IQ channels is better than 15 dB for most frequency points. The OMT achieves a polarization isolation of over 30 dB and an insertion loss (IL) of less than 3 dB across the entire WR-4 band (170-260 GHz). The DPMA operates in the WR-4 band, with measured in-band return loss characteristics better than 15 dB. The 50 GBaud DP-16QAM modulation is successfully transmitted over a 20 km SSMF and a 1 m wireless link. Additionally, a 125 Gbit/s real-time transparent fiber-THz-fiber SISO transmission system is demonstrated, marking a significant advancement in the development of large-bandwidth, high-speed 6G photonic-electronic systems.
我们通过实验展示了一种双极化、单输入单输出（SISO）的光子-电子集成系统，在220 GHz频率下实现了400 Gbit/s的单波长数据速率。该系统基于自行研发的IQ混频器、正交模变换器（OMT）和双极化复用天线（DPMA）。IQ混频器前端在30 GHz带宽内的变频损耗超过14 dB，对于大多数频率点，IQ通道之间的串扰优于15 dB。OMT在整个WR-4频段（170 - 260 GHz）实现了超过30 dB的极化隔离和小于3 dB的插入损耗（IL）。DPMA在WR-4频段工作，测量得到的带内回波损耗特性优于15 dB。50 GBaud的DP-16QAM调制信号成功在20 km的单模光纤（SSMF）和1 m的无线链路上传输。此外，还展示了一个125 Gbit/s的实时透明光纤-太赫兹-光纤SISO传输系统，这标志着大带宽、高速6G光子-电子系统的发展取得了重大进展。
