240 Gb/s optical transmission based on an ultrafast silicon microring modulator

被引：83
作者：
Zhang, Yuguang [1 ,2 ]
Zhang, Hongguang [2 ]
Zhang, Junwen [3 ]
Liu, Jia [2 ]
Wang, Lei [1 ,2 ]
Chen, Daigao [1 ,2 ]
Chi, Nan [3 ]
Xiao, Xi [1 ,2 ,4 ]
Yu, Shaohua [1 ,2 ,4 ]
机构：
[1] China Informat & Commun Technol Grp Corp CICT, State Key Lab Opt Commun Technol & Networks, Wuhan 430074, Peoples R China
[2] Natl Informat Optoelect Innovat Ctr, Wuhan 430074, Peoples R China
[3] Fudan Univ, Key Lab Informat Sci Electromagnet Waves MoE, Shanghai 200433, Peoples R China
[4] Peng Cheng Lab, Shenzhen 518055, Peoples R China
来源：
PHOTONICS RESEARCH | 2022年 / 10卷 / 04期
基金：
中国国家自然科学基金;
关键词：
MACH-ZEHNDER MODULATOR; COMMUNICATION; BAND;
D O I：
10.1364/PRJ.441791
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
An ultrafast microring modulator (MRM) is fabricated and presented with V-pi.L of 0.825 V.cm. A 240 Gb/s PAM-8 signal transmission over 2 km standard single-mode fiber (SSMF) is experimentally demonstrated. PN junction doping concentration is optimized, and the overall performance of the MRM is improved. Optical peaking is introduced to further extend the EO bandwidth from 52 to 110 GHz by detuning the input wavelength. A titanium nitride heater with 0.1 nm/mW tuning efficiency is implemented above the MRM to adjust the resonant wavelength. High bit rate modulations based on the high-performance and compact MRM are carried out. By adopting off-line signal processing in the transmitter and receiver side, 120 Gb/s NRZ, 220 Gb/s PAM-4, and 240 Gb/s PAM-8 are measured with the back-to-back bit error ratio (BER) of 5.5 x 10(-4), 1.5 x 10(-2), and 1.4 x 10(-2), respectively. A BER with different received optical power and 2 km SSMF transmission is also investigated. The BER for 220 Gb/s PAM-4 and 240 Gb/s PAM-8 after 2 km SSMF transmission is calculated to be 1.7 x 10(-2) and 1.5 x 10(-2), which meet with the threshold of soft-decision forward-error correction, respectively. (C) 2022 Chinese Laser Press
引用
收藏
页码：1127 / 1133
页数：7
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