1. |
- Fontaine, Nicolas K., et al.
(author)
-
Digital turbulence compensation of free space optical link with multimode optical amplifier
- 2019
-
In: IET Conference Publications. - : Institution of Engineering and Technology. ; 2019:CP765
-
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.
|
|
2. |
|
|
3. |
- Wittek, Steffen, et al.
(author)
-
Mode-Multiplexed Transmission within and Across Mode Groups of a Multimode-Fiber
- 2019
-
In: 2019 Optical Fiber Communications Conference and Exhibition, OFC 2019 - Proceedings. - Washington, D.C. : OSA. - 9781943580538
-
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.
|
|
4. |
- Mazur, Mikael, 1990, et al.
(author)
-
Characterization of Long Multi-Mode Fiber Links using Digital Holography
- 2019
-
In: Optics InfoBase Conference Papers. - 2162-2701. ; Part F160-OFC 2019
-
Conference paper (peer-reviewed)abstract
- We propose to use digital holography to characterize long multi-mode fiber links. A four segment 26.5km fiber span supporting 45 spatial modes is analyzed, showing the evolution of both mode-dependent loss and cross talk.
|
|