Coolerless pump wavelength optimization for Er/Yb-doped optical fiber amplifiers
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机译:掺Er / Yb的光纤放大器的无冷却器泵浦波长优化
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摘要
An optical fiber amplifier has a pump module operating at a shorter wavelength at room temperature than conventional optical fiber amplifiers. At the maximum operating case temperature, the output from the pump module is still at a lower wavelength than the upper absorption band edge of the optical fiber. In a further embodiment, an Er—Yb co-doped optical fiber is further doped with aluminum to flatten a portion of the optical absorption profile. Co-doping with aluminum reduces the sensitivity of optical amplifier output to wavelength drift of the pump module when pumped near the secondary peak.
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