Multimode Optical Amplifier As A Receiver Pre-Amplifier For Free-Space Optical Communications

摘要

In the method for processing a signal light from free-space by amplifying said signal for free-space optical communications. wherein the improvement includes the steps of (a) pre-amplifying said signal light with low noise; and (b) coupling said signal light into a multimode filter which reduces coupling hisses compared to single mode filters.