All-fiber few-mode Er/Yb co-doped fiber amplifier for mode division multiplexing under cladding pumping

Zhiqi Li; Li Pei; Jianshuai Wang; Jingjing Zheng; Tigang Ning; Jing Li

doi:10.1117/12.2607003

1 November 2021 All-fiber few-mode Er/Yb co-doped fiber amplifier for mode division multiplexing under cladding pumping

Zhiqi Li, Li Pei, Jianshuai Wang, Jingjing Zheng, Tigang Ning, Jing Li

Proceedings Volume 12057, Twelfth International Conference on Information Optics and Photonics; 120574Q (2021) https://doi.org/10.1117/12.2607003
Event: Twelfth International Conference on Information Optics and Photonics, 2021, Xi'an, China

Abstract

We experimentally demonstrate an all-fiber Er/Yb co-doped fiber (EYDF) amplifier with a low differential modal gain of 1.6 dB (for LP₀₁, LP_11a and LP_11b signal modes at 1535 nm, using a 980 nm multi-mode pump). The pump power is coupled into the fiber core by side pumping, which is used a piece of double-clad EYDF and helix-wounded tapering operation. The gain of all three modes is higher than 16 dB. The all-fiber amplifier scheme eliminates the spatial lens in the traditional core-pumping configuration and shows natural ability in integration with the transmission fiber links due to the stable fiber interconnect. Thus, we believe that the all-fiber few-mode amplifier should be probably the highly practical solution in the long-haul mode-division multiplexed transmission.

Citation Download Citation

Zhiqi Li, Li Pei, Jianshuai Wang, Jingjing Zheng, Tigang Ning, and Jing Li "All-fiber few-mode Er/Yb co-doped fiber amplifier for mode division multiplexing under cladding pumping", Proc. SPIE 12057, Twelfth International Conference on Information Optics and Photonics, 120574Q (1 November 2021); https://doi.org/10.1117/12.2607003

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KEYWORDS

Fiber amplifiers

Cladding

Multiplexing

Amplifiers

Optical amplifiers

Ytterbium

Erbium

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