Multimode fibers have been proposed for mitigating nonlinear effects in high-power fiber amplifiers, allowing for significant power scaling. Abstract: We propose a method for controlling modal gain in a multimode Erbium-doped fiber amplifier (MM-EDFA) by tuning the mode content of a multimode pump. By adjusting the powers and orientation of input pump modes, modal dependent gain can be tuned over a large dynamic range. Here we develop a tractable numerical. INSTITUTIONAL Select your institution to access the SPIE Digital Library. Wise, "Single-Mode Regenerative Amplification in Multimode Fiber," in Frontiers in Optics + Laser Science 2024 (FiO, LS), Technical Digest Series (Optica Publishing Group, 2024), paper FTu6E.