In this paper, we have mainly investigated the reconstruction of the polarization states of the incident light which passed through the turbid atmospheric media. Here, a novel polarization retrieve (PR) method is established using a Monte Carlo simulation algorithm, which is proposed to study the influence of particle scattering. The polarization states of the initial field could be retrieved accurately according to the polarization states of the scattered field and the Mueller matrix. In the case of a single homogeneous medium, the mean error of retrieved polarization is close to zero. We have also applied this method to complex atmospheric environments such as random-sized distribution particles and various index of refraction media. By comparison with the existing polarization maintaining method, the results indicate that the PR method is more applicable to disordered media with relatively larger particles. Moreover, the errors of the retrieved degree of polarization are below 0.11%, and the errors of the retrieved angle of polarization are below 0.54% in our mixed media model. So, this work will be very significant for polarizing quantum secure communication in scattering medium over a long-distance scope.
We have presented the performance evaluation for light communication under water based on polarization information. In particular, we focused on the transmitting characteristics of the polarized lights under different conditions of water types and link distances. The trajectories of transmitted photons propagating in a water channel can be simulated based on the Monte Carlo (MC) algorithm. The simulated results demonstrate that the intensity of the polarized light after being transmitted underwater decreases sharply as the transmission distance increases, but the degree of polarization (DoP) of the transmitted lights remains above 0.75. The polarization retrieve (PR) method is used for reducing the scattering impact on the DoP of the light, and the maximal enhancement of the linear degree of polarization (LDoP) can be obtained as about 16%. Meanwhile, the modified PR method with a different retrieval Mueller matrix (RMM) derived from different distances (l) of the transmission channel has also been investigated, which shows that the retrieval accuracy will be enhanced with the increase of transmission distance of the RMM.
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