We experimentally demonstrate simultaneous turbulence mitigation and channel demultiplexing in a 200 Gbit/s orbital-angular-momentum (OAM) multiplexed link by adaptive wavefront shaping and diffusing (WSD) the light beams. Different realizations of two emulated turbulence strengths (the Fried parameter
We experimentally demonstrate the utilization of adaptive optics (AO) to mitigate intra-group power coupling among linearly polarized (LP) modes in a graded-index few-mode fiber (GI FMF). Generally, in this fiber, the coupling between degenerate modes inside a modal group tends to be stronger than between modes belonging to different groups. In our approach, the coupling inside the
- NSF-PAR ID:
- 10164457
- Publisher / Repository:
- Optical Society of America
- Date Published:
- Journal Name:
- Optics Letters
- Volume:
- 45
- Issue:
- 13
- ISSN:
- 0146-9592; OPLEDP
- Page Range / eLocation ID:
- Article No. 3577
- Format(s):
- Medium: X
- Sponsoring Org:
- National Science Foundation
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) are mitigated. The experimental results show the following. (1) Crosstalk between OAM and modes can be reduced by and , respectively, under the weaker turbulence ( ); crosstalk is further improved by and , respectively, under most realizations in the stronger turbulence ( ). (2) The optical signal-to-noise ratio penalties for the bit error rate performance are measured to be and under weaker turbulence, while measured to be and under stronger turbulence for OAM and mode, respectively. -
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