A novel cost-effective fiber amplifier operating over 1400-1450 nm is developed based on pumping of a large-core Nd-doped fiber with a high-power white light-emitting diode (LED). An optical gain of 6 dB at 1400 nm is obtained by simultaneously exciting the multiple absorption bands in the visible wavelength of the Nd-doped fiber.
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Htein et al. (2013) studied this question.
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