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Space division multiplexed multicore erbium-doped fiber amplifiers

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Abstract

We report on the recent development of multicore fiber amplifiers suitable for amplifying space division multiplexed signals. We have constructed 7-core amplifiers, where the cores could be pumped individually or simultaneously through the cladding, and studied the amplification and noise properties of these amplifiers. In the core-pumped amplifier, the net average gain was 25 dB, and noise figure was less than 4 dB. Using side-coupled cladding pumping, gain over 25 dB was obtained in each of the cores over a 40-nm bandwidth covering the C-band. We have further studied numerically the amplification and noise properties of a few-moded single/multicore erbium doped fiber amplifier with a doped region that extends beyond the few-mode core. We show that when excited by a multimoded pump, this can provide nearly uniform gain in C-band for modes such as, LP01, LP11, LP21, and LP02 over a wide range of pump power. Differential modal gain (DMG) between LP01, and LP02 was ~ 0.5 dB for a small signal gain of 32 dB at 1550 nm signal wavelength. The dependence of modal gain on the size of the doped core has also been studied.

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Authors and Affiliations

  1. OFS Laboratories, 19 Schoolhouse Road, Somerset, NJ, 08873, USA

    Kazi S. Abedin, Man F. Yan, John M. Fini, Taunay F. Thierry, Lalit K. Bansal, Benyuan Zhu, Eric M. Monberg & David J. DiGiovanni

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  1. Kazi S. Abedin
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  2. Man F. Yan
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Abedin, K.S., Yan, M.F., Fini, J.M. et al. Space division multiplexed multicore erbium-doped fiber amplifiers. J Opt 45, 231–239 (2016). https://doi.org/10.1007/s12596-015-0285-2

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