基于双SOA-MZI的全光分组头处理方案研究

文章以现有的全光分组头与净荷分离方案为基础,提出一种新颖的基于双半导体光放大器（SOA）-马赫曾德尔干涉仪（MZI）的分组头与净荷分离方案,该方案充分利用了SOA-MZI的非线性特性。并且针对新方案采用数学模型进行了数值和理论分析,结果表明,经过分离装置后的光分组,其分组头和净荷得到不同的相移和增益,从而能够实现对分组头与净荷的有效分离

Determination of the number of ψ(3686) events taken at BESIII

The number of ψ(3686) events collected by the BESIII detector during the 2021 run period is determined to be (2259.3±11.1)×106 by counting inclusive ψ(3686) hadronic events. The uncertainty is systematic and the statistical uncertainty is negligible. Meanwhile, the numbers of ψ(3686) events collected during the 2009 and 2012 run periods are updated to be (107.7±0.6)×106 and (345.4±2.6)×106, respectively. Both numbers are consistent with the previous measurements within one standard deviation. The total number of ψ(3686) events in the three data samples is (2712.4±14.3)×10^