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12 March 2024 Experimental demonstration of coherent receiver with photonic lantern and digital signal processing
Aaron Yevick, Robert Bayne, Rafael Garcia, Vladimir S. Grigoryan, Robert Lafon, Sarah A. Tedder, John Veselka, Brian Vyhnalek
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Proceedings Volume 12877, Free-Space Laser Communications XXXVI; 1287711 (2024) https://doi.org/10.1117/12.3003080
Event: SPIE LASE, 2024, San Francisco, California, United States
Abstract
In free-space optical communications in which the signal is coupled into a single-mode fiber, atmospheric distortion leads to loss of signal and reduced receiver sensitivity. We demonstrate a coherent receiver system in which a Dual Polarization Quadrature Phase Shift-Keying (DP-QPSK) signal is coupled into a photonic lantern, which efficiently separates the light from a large multimode core into single mode fibers. Outputs from the lantern are passed to off-the-shelf integrated coherent receivers and digitized, and the resulting signals are coherently combined with optimal weight coefficients. The reconstructed signal exhibits reduced sensitivity to atmospheric distortion and demonstrates improved performance.
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(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.
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Aaron Yevick, Robert Bayne, Rafael Garcia, Vladimir S. Grigoryan, Robert Lafon, Sarah A. Tedder, John Veselka, and Brian Vyhnalek "Experimental demonstration of coherent receiver with photonic lantern and digital signal processing", Proc. SPIE 12877, Free-Space Laser Communications XXXVI, 1287711 (12 March 2024); https://doi.org/10.1117/12.3003080
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KEYWORDS
Digital signal processing
Receivers
Signal processing
Adaptive optics
Single mode fibers
Optical coherence
Signal detection
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