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 language | English |
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Pages (from-to) | 2588-2591 |
Number of pages | 4 |
Journal | Optics Letters |
Volume | 41 |
Issue number | 11 |
DOIs | |
Publication status | Published - 1 Jun 2016 |
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High Capacity Optical Transmission Lab
Chigo Okonkwo (Manager), Sjoerd van der Heide (Operator), Menno van den Hout (Operator), Sebastiaan Goossens (Operator) & John J.A. van Weerdenburg (Operator)
Electrical EngineeringFacility/equipment: Research lab