Novel Core-pumped Multicore Fiber Amplifier Integrated with Energy-efficient Pump Light Distributor. - Sijing Liang; John D. Downie; Sergejs Makovejs; Ian A. Davidson; Nilotpal Choudhury; Zahra Kakaei; Jayanta Sahu; Periklis Petropoulos; Yongmin Jung (OFC, 2025)