期刊
OPTICS EXPRESS
卷 24, 期 7, 页码 7191-7200出版社
OPTICAL SOC AMER
DOI: 10.1364/OE.24.007191
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资金
- National Natural Science Foundation of China [61405140, 61379014]
- National Instrumentation Program [2013YQ030915]
- Natural Science Foundation of Tianjin [15JCQNJC02000]
- Scientific Research Foundation for the Returned Overseas Chinese Scholars
We consider the degree of linear polarization (DOLP) polarimetry system, which performs two intensity measurements at orthogonal polarization states to estimate DOLP. We show that if the total integration time of intensity measurements is fixed, the variance of the DOLP estimator depends on the distribution of integration time for two intensity measurements. Therefore, by optimizing the distribution of integration time, the variance of the DOLP estimator can be decreased. In this paper, we obtain the closed-form solution of the optimal distribution of integration time in an approximate way by employing Delta method and Lagrange multiplier method. According to the theoretical analyses and real-world experiments, it is shown that the variance of the DOLP estimator can be decreased for any value of DOLP. The method proposed in this paper can effectively decrease the measurement variance and thus statistically improve the measurement accuracy of the polarimetry system. (C) 2016 Optical Society of America
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