Cao C, Lei J, Niu T. Design and Optimization of Bismuth-Doped Fiber Amplifiers in the L+ Band (1600-1650nm). HSET [Internet]. 2023 Dec. 15 [cited 2026 Jun. 2];72:468-73. Available from: https://drpress.org/ojs/index.php/HSET/article/view/13345