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- W2943894964 abstract "Optical fiber amplifier is a vital device in optical communication system, which can directly amplify optical signal. We theoretically propose a type of few-mode quantum dots-doped fiber amplifier (FM-QDFA) in this paper, capable of providing amplification for a number of linear polarization (LP) signal mode groups. The main part of the amplifier is a ring-core fiber doped with PbS quantum dots. And refractive index difference between the annular area and cladding is set to 0.035, which weakens the modal coupling between different LP mode groups. The simulation results show that the ring-core optical fiber not only supports transmission for LP(L=0∼6,1) signal mode group, but also provides relatively uniform gain for LP(L=1∼3,1) signal mode group across the wavelength band 1500 nm–1630 nm that covers the C + L band. For these three signal modes, we explore the differential modal gain (DMG) under 11 pump mode groups (LP(L=0∼10,1)). Noticing that the highest gain for LP(1,1) signal mode is approximately 31 dB obtained at the wavelength of 1530 nm and the DMG is less than 0.5 dB with a LP (7,1) pumping mode." @default.
- W2943894964 created "2019-05-16" @default.
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- W2943894964 date "2019-09-01" @default.
- W2943894964 modified "2023-10-16" @default.
- W2943894964 title "Few-mode ring-core quantum dots-doped optical fiber amplifier" @default.
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- W2943894964 doi "https://doi.org/10.1016/j.yofte.2019.05.003" @default.
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