Research Research groups Member of: Hollow Core Fibre Publications 2 publications Page 1 of 1 Spectroscopic characterization of bismuth active centres in germanosilicate optical fibers: impact of Ge concentration on E–S band amplifier gain Arindam Halder & Zahra Kakaei, 2026, Journal of Luminescence, 293 DOI: 10.1016/j.jlumin.2026.121844 Type: article Novel core-pumped multicore fiber amplifier integrated with energy-efficient pump light distributor Sijing Liang, John D. Downie, Sergejs Makovejs, Ian Davidson, Nilotpal Choudhury, Zahra Kakaei, Jayanta Sahu, Periklis Petropoulos & Yongmin Jung, 2025 Type: conference