Journal
IEEE PHOTONICS TECHNOLOGY LETTERS
Volume 26, Issue 11, Pages 1100-1103Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LPT.2014.2315500
Keywords
Mode division multiplexing (MDM); erbium doped fiber amplifier (EDFA); optical fiber communication
Funding
- European Communities 7th Framework Programme through MODE-GAP [258033]
- EPSRC [EP/I01196X/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/I01196X/1] Funding Source: researchfish
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We experimentally demonstrate an inline few-mode erbium doped fiber amplifier supporting six spatial modes with reconfigurable differential gain control and excellent gain flatness obtained through mode-selective bidirectional pumping of a custom fiber with a radially profiled erbium dopant distribution. A signal gain of >20 dB was obtained for all the guided modes with a differential modal gain <2 dB and good gain flatness across the C-band.
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