Ren, Y. et al. (2016) Experimental characterization of a 400 Gbit/s orbital angular momentum multiplexed free-space optical link over 120 m. Optics Letters, 41(3), pp. 622-625. (doi: 10.1364/OL.41.000622)
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Abstract
We experimentally demonstrate and characterize the performance of a 400-Gbit/s orbital angular momentum (OAM) multiplexed free-space optical link over 120- meters on the roof of a building. Four OAM beams, each carrying a 100-Gbit/s QPSK channel are multiplexed and transmitted. We investigate the influence of channel impairments on the received power, inter-modal crosstalk among channels, and system power penalties. Without laser tracking and compensation systems, the measured received power and crosstalk among OAM channels fluctuate by 4.5 dB and 5 dB, respectively, over 180 seconds. For a beam displacement of 2 mm that corresponds to a pointing error less than 16.7 μrad, the link bit-error-rates are below the forward error correction threshold of 3.8×10-3 for all channels. Both experimental and simulation results show that power penalties increase rapidly when the displacement increases.
Item Type: | Articles |
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Additional Information: | Funding. NxGen Partners; the Air Force Office of Scientific Research. |
Status: | Published |
Refereed: | Yes |
Glasgow Author(s) Enlighten ID: | Lavery, Professor Martin |
Authors: | Ren, Y., Wang, Z., Liao, P., Li, L., Xie, G., Huang, H., Zhao, Z., Yan, Y., Ahmed, N., Willner, A., Lavery, M. P.J., Ashrafi, N., Ashrafi, S., Bock, R., Tur, M., Djordjevic, I. B., Neifeld, M. A., and Willner, A. E. |
College/School: | College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering |
Journal Name: | Optics Letters |
Publisher: | Optical Society of America |
ISSN: | 0146-9592 |
ISSN (Online): | 1539-4794 |
Copyright Holders: | Copyright © 2016 Optical Society of America |
First Published: | First published in Optics Letters 41(3): 622-625 |
Publisher Policy: | Reproduced in accordance with the publisher copyright policy |
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