800 Gbit/s transmission over 1 km single-mode fiber using a four-channel silicon photonic transmitter  

作　　者：Hongguang Zhang Miaofeng Li Yuguang Zhang Di Zhang Qiwen Liao Jian He Shenglei Hu Bo Zhang Lei Wang Xi Xiao Nan Qi Shaohua Yu 

机构地区：[1]National Information Optoelectronics lnnovation Center,China Information and Communication Technologies Group Corporation(CICT),Wuhan 430074,China [2]State Key Laboratory of Optical Communication Technologies and Networks,China information and Communication Technologies GroupCorporation(CICT),Wuhan 430074,China [3]Accelink Technologies Co.,Ltd.,Wuhan 430205,China [4]State Key Laboratory of Superatices and Microstructures,Ilnstitute of Semiconductors,Chinese Academy of Sciences,Beijing 100083,China [5]Center of Material Science and Optoelectronics Engineering,UIniversity of Chinese Academy of Sciences,Beijing 100049,China

出　　处：《Photonics Research》2020年第11期1776-1782,共7页光子学研究（英文版）

基　　金：National Key Research and Development Programe of China(2019YFB2205201,2019YFB2205203);Hubei Technological Innovation Project(2019AAA054).

摘　　要：We demonstrate the optical transmission of an 800 Gbit/s(4×200 Gbit/s)pulse amplitude modulation-4(PAM-4)signal and a 480 Gbit/s(4×120 Gbit/s)on–off-keying(OOK)signal by using a high-bandwidth(BW)silicon photonic(SiP)transmitter with the aid of digital signal processing(DSP).In this transmitter,a four-channel SiP modulator chip is co-packaged with a four-channel driver chip,with a measured 3 dB BW of 40 GHz.DSP is applied in both the transmitter and receiver sides for pre-/post-compensation and bit error rate(BER)calculation.Back-to-back(B2B)BERs of the PAM-4 signal and OOK signal are first measured for each channel of the transmitter with respect to a variety of data rates.Similar BER performance of four channels shows good uniformity of the transmitter between different channels.The BER penalty of the PAM-4 and OOK signals for 500 m and 1 km standard single-mode fiber(SSMF)transmission is then experimentally tested by using one channel of the transmitter.For a 200 Gbit/s PAM-4 signal,the BER is below the hard-decision forward error correction(HD-FEC)threshold for B2B and below the soft-decision FEC(SD-FEC)threshold after 1 km transmission.For a 120 Gbit/s OOK signal,the BER is below SD-FEC threshold for B2B.After 500 m and 1 km transmission,the data rate of the OOK signal shrinks to 119 Gbit/s and 118 Gbit/s with the SD-FEC threshold,respectively.Finally,the 800 Gbit/s PAM-4 signal with 1 km transmission is achieved with the BER of all four channels below the SD-FEC threshold.

关 键 词：Gbit/s CHANNEL FIBER 

分 类 号：TN929.1[电子电信—通信与信息系统]