Circular polarization shift keying with homodyne coherent detection in gamma-gamma atmospheric turbulence channel

Yan Hong; Xueguang Yuan; Yangan Zhang; Yue Zhang; Limeng Wang; Huihui Ma

doi:10.1117/12.2193357

5 August 2015 Circular polarization shift keying with homodyne coherent detection in gamma-gamma atmospheric turbulence channel

Yan Hong, Xueguang Yuan, Yangan Zhang, Yue Zhang, Limeng Wang, Huihui Ma

Author Affiliations +

Proceedings Volume 9621, 2015 International Conference on Optical Instruments and Technology: Advanced Lasers and Applications; 96210A (2015) https://doi.org/10.1117/12.2193357
Event: International Conference on Optical Instruments and Technology 2015, 2015, Beijing, China

Abstract

We propose a communication system of Circular Polarization Shift Keying (CPolSK) with homodyne coherent detection in free-space optical (FSO) communication with Gamma-Gamma atmospheric turbulence channel. The system need no polarization coordinate alignment, thus the complexity is reduced. Meanwhile, we derived the closed bit error rate (BER) expression of the system compared with the coherent on-off keying (OOK) system. Simulation results show that CPolSK with homodyne system is highly insensitive to the phase noise and BER performance is greatly promoted compared to OOK modulation, the signal-to-noise ratio (SNR) of receiving is reduced about 8dB when the system has the same BER performance under same conditions.

Citation Download Citation

Yan Hong, Xueguang Yuan, Yangan Zhang, Yue Zhang, Limeng Wang, and Huihui Ma "Circular polarization shift keying with homodyne coherent detection in gamma-gamma atmospheric turbulence channel", Proc. SPIE 9621, 2015 International Conference on Optical Instruments and Technology: Advanced Lasers and Applications, 96210A (5 August 2015); https://doi.org/10.1117/12.2193357

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KEYWORDS

Homodyne detection

Free space optics

Polarization

Turbulence

Signal to noise ratio

Modulation

Atmospheric turbulence

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