期刊
OPTICS EXPRESS
卷 20, 期 17, 页码 18568-18578出版社
OPTICAL SOC AMER
DOI: 10.1364/OE.20.018568
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资金
- National Natural Science Foundation of China [61078062, 61108074]
- Research Fund for the Doctoral Program of Higher Education of China [20100142120012]
A processing method for the precise acquisition of 1D interference spectrum from the 2D Fabry-Perot(F-P) fringe pattern is proposed in the paper. Current methods can only measure the spectrum with full-pixel accuracy. The new method is capable to achieve the sub-pixel accuracy as well as reduce the noise by taking full advantage of the 2D image information and analyzing the statistical values of pixels in a comprehensive way. Experimental results show that the accuracy of the measured Brillouin shift and linewidth is around several MHzs, which is significantly improved compared to methods with full-pixel accuracy. (C) 2012 Optical Society of America
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