High data-rate differential phase shift keying receiver for satellite-to-ground optical communication link

Yan'an Zhi; Jianfeng Sun; Enwen Dai; Yu Zhou; Lijuan Wang; Wei Lu; Peipei Hou; Liren Liu

doi:10.1117/12.928391

24 October 2012 High-data rate differential phase shift keying receiver for satellite-to-ground optical communication link

Yan'an Zhi, Jianfeng Sun, Enwen Dai, Yu Zhou, Lijuan Wang, Wei Lu, Peipei Hou, Liren Liu

Author Affiliations +

Proceedings Volume 8517, Laser Communication and Propagation through the Atmosphere and Oceans; 85170F (2012) https://doi.org/10.1117/12.928391
Event: SPIE Optical Engineering + Applications, 2012, San Diego, California, United States

Abstract

The high data-rate satellite-to-ground coherent optical communication link is limited because the phase integrity of a beam is impaired when passing through the atmospheric turbulence. Based on the interference of two successive data bits in an unequal arm-length Mach-Zehnder delay interferometer, the differential phase shift keying receiver is suited for high data-rate satellite-to-ground coherent optical communication links due to its immunity of the wave front impairment when passing through the atmospheric turbulence. In the time-delay self-homodyne interferometric detection used in 2×4 90 degree optical hybrid, the optical path difference corresponds to the duration of one bit. The optical path difference is stabilized to below one thousandth of the wavelength by moving a finely motorized platform with the close-loop control using the phase feedback from the outputs of the 90 degree hybrid. The 2.5 Gbps optical communication link has already been verified between two buildings over a distance of 2.4km in the worst-case atmospheric conditions. The design and experimental results are given in this paper.

Citation Download Citation

Yan'an Zhi, Jianfeng Sun, Enwen Dai, Yu Zhou, Lijuan Wang, Wei Lu, Peipei Hou, and Liren Liu "High-data rate differential phase shift keying receiver for satellite-to-ground optical communication link", Proc. SPIE 8517, Laser Communication and Propagation through the Atmosphere and Oceans, 85170F (24 October 2012); https://doi.org/10.1117/12.928391

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