Abstract

Space division multiplexing (SDM) erbium-doped seven-core fiber amplifiers (EDFAs) are increasingly attracting interest due to their performances in improving capacity transmission systems. To increase the gain and improve the characteristics of the SDM seven-core fiber amplifier, this paper proposes the use of the erbium/ytterbium (${{\rm Er}^{3 +}}/{{\rm Yb}^{3 +}}$) co-doped seven-core fiber amplifier. A theoretical model of the SDM co-doped seven-core fiber amplifier is developed. The presented results show that the proposed model allows us to obtain a peak gain over 60 dB at a wavelength of 1543 nm, a large bandwidth of 64 nm with a gain greater than 20 dB and with a minimum noise which is lower than 6 dB.

© 2020 Optical Society of America

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