Maximizing transmission capacity in optical communication systems utilizing a microresonator comb laser source with adaptive modulation and bandwidth allocation strategies  

作　　者：JUN HU WEI WANG ZHENYU XIE CHENGNIAN LIU FAN LI DAQUAN YANG 

机构地区：[1]State Key Laboratory of Information Photonics and Optical Communications,Beijing University of Posts and Telecommunications,Beijing 100876,China [2]School of Information and Communication Engineering,Beijing University of Posts and Telecommunications,Beijing 100876,China [3]School of Electronics and Information Technology,Sun Yat-sen University,Guangzhou 510275,China [4]Key Laboratory of Optoelectronic Materials and Technologies,School of Electronics and Information Technology,Sun Yat-sen University,Guangzhou 510275,China [5]State Key Laboratory for Artificial Microstructure and Mesoscopic Physics and Frontiers Science Center for Nano-optoelectronics,School of Physics,Peking University,Beijing 100871,China

出　　处：《Photonics Research》2024年第11期2573-2580,共8页光子学研究(英文版)

基　　金：Beijing Municipal Natural Science Foundation(Z210004);National Key Research and Development Program of China(SQ2023YFB2805600);State Key Laboratory of Information Photonics and Optical Communications,BUPT,China(IPOC2021ZT01);Beijing Nova Program from Beijing Municipal Science and Technology Commission(20230484433);Fundamental Research Funds for the Central Universities(2023PY08);Beijing University of Posts and Telecommunications(530224024);National Natural Science Foundation of China(62271517);Basic and Applied Basic Research Foundation of Guangdong Province(2023B1515020003);State Key Laboratory of Advanced Optical Communication Systems and Networks of China(2024GZKF19)。

摘　　要：Traditional optical communication systems employ bulky laser arrays that lack coherence and are prone to severe frequency drift.Dissipative Kerr soliton microcombs offer numerous evenly spaced optical carriers with a high optical signal-to-noise ratio(OSNR)and coherence in chip-scale packages,potentially addressing the limitations of traditional wavelength division multiplexing(WDM)sources.However,soliton microcombs exhibit inhomogeneous OSNR and linewidth distributions across the spectra,leading to variable communication performance under uniform modulation schemes.Here,we demonstrate,for the first time,to our knowledge,the application of adaptive modulation and bandwidth allocation strategies in optical frequency comb(OFC)communication systems to optimize modulation schemes based on OSNR,linewidth,and channel bandwidth,thereby maximizing capacity.Experimental verification demonstrates that the method enhances spectral efficiency from 1.6 to2.31 bit·s^(-1)·Hz^(-1),signifying a 44.58%augmentation.Using a single-soliton microcomb as the light source,we achieve a maximum communication capacity of 10.68 Tbps after 40 km of transmission in the C-band,with the maximum single-channel capacity reaching 432 Gbps.The projected combined transmission capacity for the C-and L-bands could surpass 20 Tbps.The proposed strategies demonstrate promising potential of utilizing soliton microcombs as future light sources in next-generation optical communication.

关 键 词：communication RESONATOR SOLITON 

分 类 号：TN9[电子电信—信息与通信工程]