100W C-band amplifiers for Tbit/s satellite links: EPOS project

In this paper, G&H present work on the development of extremely high-power optical fibre amplifiers in the 1.5µm window for Tbit/s satellite links that will enable next generation optical satellite communications. The EPOS development project focuses on developing a 100W optical amplifier for space and a 1000W amplifier system for ground use. Within this paper, a range of experimental and simulation results are presented which include, FWM crosstalk, and gain flatness under WDM operation, nonlinear polarization rotation under intensity modulation and power limits of ErYb fibres induced by parasitic lasing at 1µm