Abstract

In this article, for the first time, we propose a photonic-aided digital-to-analog converter (PA-DAC) to break through transmitter-side bandwidth limitation in intensity modulation and direct detection (IM-DD) systems. By using this method, bandwidth of receiver-side devices can be fully utilized, and nonlinear distortions in high-data-rate electrical signals are avoided. Experimental results show that, with only linear equalization, 120 GBaud PAM-4 and PAM-6 signals have been successfully generated and detected with bite error ratios (BERs) below 6.25%-OH HD-FEC and 20%-OH SD-FEC limits, respectively.

100 Gbit/s PAM4 signal transmission and reception for 2-km interconnect with adaptive notch filter for narrowband interference

Fan Li, Dongdong Zou, Li Ding, Yidan Sun, Jianping Li, Qi Sui, Liangchuan Li, Xingwen Yi, and Zhaohui Li
Opt. Express 26(18) 24066-24074 (2018)

224-Gbps single-photodiode PAM-4 transmission with extended transmitter bandwidth based on optical time-and-polarization interleaving

Xiaoling Zhang, Yan Fu, Deming Kong, Longsheng Li, Shi Jia, Jin Wei, Chen Chen, Chongfu Zhang, Kun Qiu, and Hao Hu
Opt. Express 28(14) 21155-21164 (2020)

C-band 67 GHz silicon photonic microring modulator for dispersion-uncompensated 100 Gbaud PAM-4

David W. U Chan, Xiong Wu, Zunyue Zhang, Chao Lu, Alan Pak Tao Lau, and Hon Ki Tsang
Opt. Lett. 47(11) 2935-2938 (2022)

C-band 120-Gb/s PAM-4 transmission over 50-km SSMF with improved weighted decision-feedback equalizer

Junwei Zhang, Xiong Wu, Lin Sun, Jie Liu, Alan Pak Tao Lau, Changjian Guo, Siyuan Yu, and Chao Lu
Opt. Express 29(25) 41622-41633 (2021)

Decision region partition aided MLSE for O-band 65-Gbaud PAM-4 system over 40-km transmission with a severe bandwidth constraint

Weihao Ni, Fan Li, Mingzhu Yin, Zhiwei Chen, Wei Wang, Dongdong Zou, Yi Cai, Qi Sui, and Zhaohui Li
Opt. Lett. 47(17) 4387-4390 (2022)