Abstract
High-power optical fiber amplifiers (OFAs) are needed in various optical transmission systems: wavelength-division multiplexing (WDM) systems, large passive splitting systems, long-haul repeaterless systems, analog distribution systems, etc. The use of high power pumping sources is one of the most important factors for high-power OFAs. High-power OFAs with various pumping sources are reported. We demonstrate a high-power Er-doped fiber amplifier (EDFA) pumped with wavelength multiplexed light from a MQW semiconductor laser diode unit.
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