期刊
JOURNAL OF LIGHTWAVE TECHNOLOGY
卷 35, 期 3, 页码 430-436出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JLT.2017.2651145
关键词
Fiber devices and optical amplifiers; optical vortices; space-division multiplexing
资金
- UK EPSRC [EP/J008591/1, EP/I01196X/1, EP/M014029]
- A* STAR through Advanced Optics in Engineering Programme
- NSF-GRP [DGE-1247312]
- EPSRC [EP/J008591/1, EP/I01196X/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/I01196X/1, EP/J008591/1] Funding Source: researchfish
We present for the first time broadband operation of an optical orbital angular momentum (OAM) erbium-doped fiber amplifier for lower order OAM modes based on an air-hole erbium-doped fiber designed and fabricated to provide significant mode splitting between the OAM vertical bar l vertical bar = 1 modes and the adjacent vector modes. Up to 15.7 dB gain is obtained using a cladding pumped amplifier configuration for OAM modes with topological charge vertical bar l vertical bar = 1 in the operational wavelength range 1545-1600 nm
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