Kaur, Jaspreet, et al. “Multi-Stage EDFA Amplifiers: Optimizing Gain ‎and Noise Performance Across Fiber Lengths (10–‎‎24 M) in the 185.2–186.2 THz Band‎”. Journal of Theoretical and Applied Physics, vol. 19, no. 6, Dec. 2025, https://doi.org/10.57647/j.jtap.2025.1906.59.