Project supported by the Shandong Natural Science Foundation,China (Grant No. ZR2021LLZ006);the National Natural Science Foundation of China (Grant Nos. 61675118 and 12274123);the Taishan Scholars Program of Shandong Province,China (Grant No. ts20190936);the Shandong University of Science and Technology Research Fund,China(Grant No. 2015TDJH102)。
A scheme of optical four-level pulse amplitude modulation(PAM-4) is proposed based on dual-Raman process in Rydberg atoms. A probe field counter-propagates with a dual-Raman field which drives the ground and the excit...
National Natural Science Foundation of China(62205255,U21A20454);Young Top-notch Talent Cultivation Program of Hubei Province。
Based on the 90 nm silicon photonics commercial foundry,sidewall-doped germanium-silicon photodetectors(PDs)are designed and fabricated.The large designed overlap between the optical field and electric field achieves ...
National Key Research and Development Program of China(Grant No.2019YFB1803905);National Natural Science Foundation of China(Grant Nos.61871030,61671053);Fundamental Research Funds for the Central Universities(Grant No.FRF-MP-19-009);State Key Laboratory of Advanced Optical Communication Systems Networks,China,Open Fund of IPOC(BUPT)(Grant No.IPOC2018B009);Foundation of Beijing Engineering and Technology Center for Convergence Networks and Ubiquitous Services.
In this paper,the theoretical bit error rate(BER)of N-level pulse amplitude modulation(PAMN)and M-ary quadrature amplitude modulation(M-QAM)have been studied and compared under different scenarios,including(i)PAM with...