Few-mode erbium-doped fiber amplifier with photonic lantern for pump spatial mode control

G. Lopez-Galmiche, Z. Sanjabi Eznaveh, J.E. Antonio-Lopez, A. M. Velazquez Benitez, Jorge Rodriguez-Asomoza, J. J. Sanchez Mondragon, C. Gonnet, P. Sillard, G. Li, A. Schülzgen, C.M. Okonkwo, R. Amezcua Correa

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Abstract

We demonstrate a few-mode erbium-doped fiber amplifier employing a mode-selective photonic lantern for controlling the modal content of the pump light. Amplification of six spatial modes in a 5 m long erbium-doped fiber to x223C;6.2x2009;x2009;dBm average power is obtained while maintaining high modal fidelity. Through mode-selective forward pumping of the two degenerate LP21 modes operating at 976 nm, differential modal gains of lt;1x2009;x2009;dB between all modes and signal gains of x223C;16x2009;x2009;dB at 1550 nm are achieved. In addition, low differential modal gain for near-full C-band operation is demonstrated.
Original languageEnglish
Pages (from-to)2588-2591
Number of pages4
JournalOptics Letters
Volume41
Issue number11
DOIs
Publication statusPublished - 1 Jun 2016

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