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The next generation high bandwidth optical links from earth to space will requirement the development of new high power WDM sources. In this paper G&H present the latest results of their ongoing development of these sources. Namely the development and testing of a 50W optical fibre amplifier that operables across much of C-band is presented as well as a high power wavelength division multiplexer, designed to combine multiple high power amplifiers outputs into a diffraction limited beam.
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Matthew Welch, Aubin Donnot, James Edmunds, Marios Kechagias, Elliott Prowse, Karen Hall, Peter Kean, Stratos Kehayas, "High power WDM sources for laser communication," Proc. SPIE 11993, Free-Space Laser Communications XXXIV, 119930B (4 March 2022); https://doi.org/10.1117/12.2608506