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Erschienen in:
2024 | OriginalPaper | Buchkapitel
Polarization Aberration Analysis of Free Space Quantum Communication Optical Systems and Applications
verfasst von : Huagui Li, Shaobo Li, Jiaxu Wen, Xuchao Liu, Shuquan Ma, Shilun Sun, Heliang Song
Erschienen in: Proceedings of the 2nd International Conference on Internet of Things, Communication and Intelligent Technology
Verlag: Springer Nature Singapore
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Abstract
Free space quantum key distribution systems apply polarization coding or polarization multiplexing frequently to realize free space channel transmission. In order to ensure the correct detection and decoding of the signals, it is necessary for the optical system possessing a good polarization preservation property. Based on the polarized light transmission theory, a polarization signal transmission model of the optical system under non-approximate conditions is established, and the influence of polarization state of the incident light, the field-of-view angle of the incident light, and the refractive index of the membrane layer to the polarization characteristics of the optical system is analyzed. And the feasibility of improving the polarization maintaining capability of the system by optimizing the parameters of the optical system is discussed. The results show that for the line-polarized light that commonly used in quantum communication systems, the polarization maintaining of the system can be guaranteed over 98%.