Simultaneous turbulence mitigation and channel demultiplexing for two 100 Gbit/s orbital-angular-momentum multiplexed beams by adaptive wavefront shaping and diffusing
Abstract
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 r 0 = 0.4 , 1.0 m m ) are mitigated. The experimental results show the following. (1) Crosstalk between OAM l = + 1 and l = − 1 modes can be reduced by > --> 10.0 and > --> 5.8 d B , respectively, under the weaker turbulence ( r 0 = 1.0 m m ); crosstalk is further improved by > --> 17.7 and > --> 19.4 d B , respectively, under most realizations in the stronger turbulence ( r 0 = 0.4 m m ). (2) The optical signal-to-noise ratio penalties for the bit error rate performance are measured to be ∼ 0.7 and ∼ 1.6 d B under weaker turbulence, while measured to be ∼ 3.2 and ∼ 1.8 d B under stronger turbulence for OAM l = + 1 and l = − 1 mode, respectively.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Jan 30, 2020
- Source ID
- 10.1364/ol.383714
Entities
People
- Ahmed Almaiman
- Alan E. Willner
- Ari N. Willner
- Brittany Lynn
- Cong Liu
- Hao Song
- Haoqian Song
- Huibin Zhou
- Jing Du
- Kai Pang
- Long Li
- Moshe Tur
- Robert Bock
- Robert W. Boyd
- Runzhou Zhang
- Yiyu Zhou
- Zhe Zhao
Organizations
- Air Force Research Laboratory
- Defense Security Cooperation Agency
- National Science Foundation
- Office of Naval Research