Abstract

Toward the realization of low-cost, long-, and extended-reach 400GbE data-center applications, the performance of pulse amplitude modulated (PAM) signals is studied using a state-of-the-art, high-performance 1.3-μm distributed feedback directly modulated laser, without any optical amplification or complex digital processing. Amplifierless PAM-4 transmissions of up to 64-Gb/s are achieved over 40 km of standard single-mode fiber (SSMF) for standard KP4-FEC, while 84-Gb/s PAM-8 signals are evaluated over 10 km SSMF.

© 2018 Optical Society of America

Amplifier-free 4×96 Gb/s PAM8 transmission enabled by modified Volterra equalizer for short-reach applications using directly modulated lasers

Di Li, Lei Deng, Yao Ye, Yucheng Zhang, Haiping Song, Mengfan Cheng, Songnian Fu, Ming Tang, and Deming Liu
Opt. Express 27(13) 17927-17939 (2019)

Transmission of 2 × 56  Gb/s PAM-4 signal over 100  km SSMF using 18  GHz DMLs

Shiwei Zhou, Xiang Li, Lilin Yi, Qi Yang, and Songnian Fu
Opt. Lett. 41(8) 1805-1808 (2016)

First demonstration of a 400 Gb/s 4λ CWDM TOSA for datacenter optical interconnects

Eslam El-Fiky, Mohamed Osman, Alireza Samani, Claude Gamache, Michael H. Ayliffe, Jingsi Li, Maxime Jacques, Yun Wang, Amar Kumar, and David V. Plant
Opt. Express 26(16) 19742-19749 (2018)

Transmission of a 56 Gbit/s PAM4 signal with low-resolution DAC and pre-equalization only over 80 km fiber in C-band IM/DD systems for optical interconnects

Mingzhu Yin, Dongdong Zou, Wei Wang, Fan Li, and Zhaohui Li
Opt. Lett. 46(22) 5615-5618 (2021)

2 × 64 Gb/s PAM-4 transmission over 70 km SSMF using O-band 18G-class directly modulated lasers (DMLs)

Fan Gao, Shiwei Zhou, Xiang Li, Songnian Fu, Lei Deng, Ming Tang, Deming Liu, and Qi Yang
Opt. Express 25(7) 7230-7237 (2017)