posted on 2024-04-16, 07:29authored byTing Wang, Jing-Zhi Huang, Bo Yang, jiajian chen, Jiale Qin, Xinlun Cai, jie yan, Xi Xiao, Zihao Wang, Jianjun Zhang
Quantum-dot mode-locked lasers have the advantages such as high temperature stability, large optical bandwidth, low power consumption, which makes it an ideal optical comb source, especially for wavelength division multiplexing (WDM) telecommunications and optical I/O applications. In this work, we demonstrated O-band quantum dot colliding pulse mode-locked laser (CPML) to generate optical frequency combs with 200 GHz spacing with maximum channels of 12 within 3 dB optical bandwidth. To achieve high output power of individual comb line, 4 channel conditions are implemented at central wavelength of 1310 nm for WDM transmission experiments. Each channel exhibits more than 10 dBm output power with 200 Gb/s PAM-4 and 270 Gb/s PAM-8 modulation capability via thin film LiNO3 MZI modulator without requirement of any optical amplifications. This high-order QD CPML is an ideal comb source for power-efficient optical interconnects and large bandwidth optical data transmission.
History
Funder Name
National Key Research and Development Program of China (2021YFB2800403); National Natural Science Foundation of China (62225407,62334013,12274449,62005308); Innovation Program for Quantum Science and Technology (2021ZD0302300); Youth Innovation Promotion Association of the Chinese Academy of Sciences (Y2022005); Youth Innovation Promotion Association of the Chinese Academy of Sciences (2023008)