Optical fiber system having a remote power module

A high power optical fiber system comprising

• an initial amplifier stage comprising a first active optical fiber operatively coupled to one or more first pump sources, the first active optical fiber having an output of amplified radiation, the initial amplifier stage being configured in a first enclosure;
• a first signal optical fiber having an input operatively coupled to the output of amplified radiation having a wavelength of the first active optical fiber of the initial amplifier stage and an output;
• one or more final pump sources;
• one or more final pump optical fibers, each having an input coupled to one or more of the final pump sources and an output;
• and
• a power module comprising a final amplifier stage, the final amplifier stage comprising a final active optical fiber having an input operatively coupled to the output of the first signal optical fiber and an output of amplified radiation having the wavelength, the final active optical fiber being operatively coupled to the outputs of the one or more final pump optical fibers, the power module being disposed in a power module enclosure separated from the first enclosure by an optical path length in the range of about 1 m to about 100 m and by a spatial distance in the range of about 1 m to about 100 m,
• wherein
• the first single optical fiber extends from the initial amplifier stage to the power module,
• the optical path length between the first active optical fiber and the final active optical fiber is no more than about 100 m,
• the optical path length between each of the one or more final pump sources and the final active optical fiber is no more than about 100 m,
• the power module enclosure has no pump sources disposed therein, and
• the high power optical fiber laser system is configured to output at least 20 W of optical power at the output of the final active optical fiber.