1. |
- Fontaine, Nicolas K., et al.
(author)
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Digital turbulence compensation of free space optical link with multimode optical amplifier
- 2019
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In: IET Conference Publications. - : Institution of Engineering and Technology. ; 2019:CP765
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Conference paper (peer-reviewed)abstract
- We demonstrate digital turbulence compensation using a 12-spatial mode digital coherent receiver with a multimode preamplifier that provides a 6-dB sensitivity improvement. This combination acts similarly to ideal lossless adaptive optics. Coherent superposition of 12 spatial-modes reduced median BER from 0.1 to 1×10-5 compared to traditional single-mode detection.
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3. |
- Wittek, Steffen, et al.
(author)
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Mode-Multiplexed Transmission within and Across Mode Groups of a Multimode-Fiber
- 2019
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In: 2019 Optical Fiber Communications Conference and Exhibition, OFC 2019 - Proceedings. - Washington, D.C. : OSA. - 9781943580538
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Conference paper (peer-reviewed)abstract
- We show mode-multiplexed transmission over individual mode groups up to 9 groups of a 27 km long graded-index multimode fiber. We also investigate transmission distances up to 500 km using a recirculating loop arrangement for the first 6 mode groups using QPSK and 16-QAM signals.
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