Journal
JOURNAL OF LIGHTWAVE TECHNOLOGY
Volume 39, Issue 4, Pages 1186-1193Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JLT.2020.3047614
Keywords
Optical fiber amplifiers; Multiplexing; Noise figure; Power demand; Multicore processing; Erbium-doped fiber amplifiers; L-band; Erbium doped fiber amplifier; randomly coupled multi-core fiber; space division multiplexing; power conversion efficiency
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By adjusting the length of the erbium-doped fiber, a 12-core EDFA can operate in both C and L bands, demonstrating good amplification characteristics and applicability for inline amplified transmission systems. The study found that for long-distance SDM transmission, MDL impacts the power efficiency of randomly coupled multi-core EDFAs.
A randomly coupled 12-core erbium-doped fiber amplifier (EDFA) operating in the C- or L-band is investigated. We experimentally demonstrate that both C and L-band operation can be supported with the 12-core EDFA by adjusting the erbium-doped fiber (EDF) length. Evaluations of the amplification characteristics of the proposed EDFA showed that a modal gain of more than 20 dB or 15 dB, a noise figure of about 5 dB or 6 dB, and a mode-dependent loss penalty of less than 1 dB or 2 dB were respectively obtained over the whole C-band (1530-1565 nm) or L-band (1570-1605 nm) with 8- or 60-m EDF. Transmission experiments showed the applicability of our EDFAs for inline amplified transmission systems. We also examined the impact of MDL on the power efficiency of the randomly coupled multi-core EDFA for achieving power-efficient long-distance SDM transmission.
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