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- W3136827065 abstract "A 980 nm semiconductor laser is always selected as the pump source for erbium-ytterbium co-doped optical waveguide amplifiers. In this work, two low-cost blue-violet LEDs, rather than an expensive 980 nm laser, were used to pump an Er 3+ -Yb 3+ co-doped phosphate planar waveguide. When the signal power was 0.4 mW at a 1550 nm wavelength, internal optical gains of about 4.1 and 4.5 dB/cm were respectively obtained under the excitations of a 32 mW/cm 2 , 275 nm LED and a 914 mW/cm 2 , 405 nm LED. It was found that 51.17% of the total Er 3+ ions in the 2 H 9/2 state contributed to the luminescence at 1550 nm, and a theoretical model of gain simulation was established under the excitation of a 405 nm LED. The calculated gain of about 4.1 dB/cm was found to be in accordance with the experimental optical gain results." @default.
- W3136827065 created "2021-03-29" @default.
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- W3136827065 date "2021-03-29" @default.
- W3136827065 modified "2023-10-18" @default.
- W3136827065 title "Demonstration of optical gain at 1550 nm in an Er<sup>3+</sup>-Yb<sup>3+</sup> co-doped phosphate planar waveguide under commercial and convenient LED pumping" @default.
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- W3136827065 doi "https://doi.org/10.1364/oe.414847" @default.
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