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24 November 2021 High-efficiency 1550-nm fiber amplifier with hybrid pumping
Lisha Wang, Wei Yan, Songsong Sun, Minzhe Liu, Menglin Liu, Yong Wang, Zigang Zhao, Kun Zhao
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Proceedings Volume 12060, AOPC 2021: Advanced Laser Technology and Applications; 120600D (2021) https://doi.org/10.1117/12.2604677
Event: Applied Optics and Photonics China 2021, 2021, Beijing, China
Abstract
We mainly study the conversion efficiency of Erbium/Ytterbium (Er/Yb) co-doped silicate glass fiber (Nufern PM-EYDF-12/130-HE) under different pump wavelengths, pump methods, gain fiber length and input signal power. Through a series of experimental studies, it is found that the hybrid pump mode of multi-mode pump diodes at 976 nm and 915 nm/940 nm are more efficient than that of single-wavelength pumping. When the input signal power is 85 mW, the fiber length is 3.9 m, the hybrid pump power of 976 nm and 940 nm is 10 W respectively, the output optical power can reach 6.41 W, and the optical-to-optical conversion efficiency is 33.7 %, and the signal-to-noise ratio (SNR) is more than 45 dB. When the hybrid pump power of 976 nm and 915 nm is 10 W respectively, the output power can reach 6.31 W, and the PPCE is 33 %. Under the condition of 20 W reverse pump power, the optical-to-optical efficiency of 976 nm, 915 nm and 940 nm single-wavelength pump is 30.7 %, 25.2 % and 21.7 % respectively.
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Lisha Wang, Wei Yan, Songsong Sun, Minzhe Liu, Menglin Liu, Yong Wang, Zigang Zhao, and Kun Zhao "High-efficiency 1550-nm fiber amplifier with hybrid pumping", Proc. SPIE 12060, AOPC 2021: Advanced Laser Technology and Applications, 120600D (24 November 2021); https://doi.org/10.1117/12.2604677
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KEYWORDS
Fiber amplifiers
Fiber lasers
Signal to noise ratio
Diodes
High power fiber lasers
Energy efficiency
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