Figure 1From: Conception, modelling, and characterization of a fiber amplifier with a simple and easy-to-repair configuration intended for the use in harsh environmentsOptical system of the YDFA. Abbreviations are OI: optical isolator, PBS: polarization beam splitter, FC: fiber coupler, FF: fiber-to-fiber connector, PM: power meter, GP: glass plate, and BB: beam block. The splice points of the optical fiber are denoted with crosses and label numbers. In particular, splice points 4 and 5 connect the YDF, depicted in the bold green lineBack to article page