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10 April 2023 Gain-equalized L-band few-mode erbium-doped fiber amplifier based on extremely simple fiber design
Qiang Qiu, Zhimu Gu, Le He, Yingbo Chu, Nengli Dai, Jinyan Li
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Proceedings Volume 12614, 14th International Photonics and Optoelectronics Meetings (POEM 2022); 126140F (2023) https://doi.org/10.1117/12.2671947
Event: 14th International Photonics and Optoelectronics Meeting (POEM 2022), 2022, Wuhan, China
Abstract
We numerically and experimentally demonstrated a low different modal gain (DMG) 4-LP modes L-band few-mode fiber amplifier by using an extremely simple fiber structure. The optimization effect of FM-EDF core radius on DMG performance and gain was numerically studied. An FM-EDF was fabricated by modified chemical vapor deposition (MCVD), for which the NA was improved to 0.25 and the core radius was properly selected to 8.1 μm. In the case of core pumping of the LP11 mode at 1480 nm, an e DMG of ~0.7 dB and the gain of <17 dB was obtained for all four modes at 1570 nm. The results suggested that our proposed erbium-doped fiber amplifier has great potential for large-capacity long-haul mode division multiplexing (MDM) transmission system.
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Qiang Qiu, Zhimu Gu, Le He, Yingbo Chu, Nengli Dai, and Jinyan Li "Gain-equalized L-band few-mode erbium-doped fiber amplifier based on extremely simple fiber design", Proc. SPIE 12614, 14th International Photonics and Optoelectronics Meetings (POEM 2022), 126140F (10 April 2023); https://doi.org/10.1117/12.2671947
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Fiber amplifiers
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